How a Virtual Assistant Handles Supplier and Vendor Liaison for UK Businesses
It is 7:15 on a Tuesday morning and Rachel, who runs operations for a 24-person fit-out contractor in Bristol, has already opened her laptop twice before leaving the house. There are 41 unread emails in the inbox. Nine of them are from suppliers. Four are chasing her for payment on invoices she is fairly sure were settled in March, though she would need to check the bank against the accounting system to be certain, and she does not have twenty minutes to do that before her 8:00. Three are quotes she requested eleven days ago, arriving now, after she has already committed to a price for the client. One is a delivery notification for materials going to a site that finished last Friday. And one, buried under the rest, is a polite note from a joinery supplier she has used for six years saying that unless the outstanding balance is cleared this week they will need to put the next order on hold.
Nobody at that company is bad at their job. Rachel is excellent at hers. What has happened is more ordinary and more corrosive than incompetence: the supplier relationship has quietly become an administrative load that nobody was ever given the hours to carry, and so it gets carried in fragments — between meetings, at 6:40pm, on a Sunday, in the gaps. And in those fragments, things slip.
The gap between British businesses that have someone genuinely owning supplier and vendor liaison and those that improvise it around everything else has become wider than most people running these businesses realise. Not marginally wider. Not “we could tidy that up” wider. Wide enough that it now shows up in payment terms, in lead times, in what your suppliers will do for you when something goes wrong at 4pm on a Friday, and — increasingly — in whether you can produce an audit trail when a customer’s compliance team asks for one.
The Admin Nobody Costed For
Supplier liaison is one of those functions that almost never appears on an org chart at an SME and almost always appears on somebody’s evenings.
Think about what it actually involves for a typical British business turning over between £1m and £20m. Sourcing and comparing quotes. Raising and tracking purchase orders. Chasing delivery confirmations. Reconciling what arrived against what was invoiced against what was ordered. Querying discrepancies. Negotiating terms at renewal. Onboarding new suppliers, which now means collecting insurance certificates, VAT details, bank verification, anti-slavery statements and data-processing agreements. Keeping the supplier list current when contacts leave. Managing the relationship itself — the calls, the check-ins, the difficult conversation about a delayed shipment that needs to happen without torching a relationship you will still need next quarter.
That is a job. In a large organisation it is several jobs, sitting inside a procurement function with a head of department and a budget. In a 15-person business it is Rachel, between things.
The result is predictable and it is documented. The UK Government’s own research into late payments, conducted by London Economics and published via the Small Business Commissioner, found that roughly 22% of surveyed businesses spend staff time chasing late payments, and among those affected the average is about 86 hours a year. Scaled across the economy, that comes to something in the region of 133 million hours of staff time annually spent on the single narrow task of asking people to pay invoices they already agreed to pay.
133 million hours a year. That is the collective British effort spent on chasing money that was never in dispute — before anyone raises a purchase order, resolves a delivery query, or negotiates a single renewal.
And chasing debtors is only one half of it. The other half — managing the suppliers you owe, keeping them warm, keeping them prioritising your jobs — is rarely counted at all, because it does not produce an invoice. It produces something less visible: whether your supplier squeezes you into a full production schedule when a client changes the spec, or whether they do not.
What the Payment Relationship Actually Costs in 2026
The numbers here have shifted enough over the past two years that it is worth being precise, because the received wisdom is now partly out of date.
The direction of travel on large-company payment behaviour has genuinely improved. Figures published under the Reporting on Payment Practices and Performance Regulations 2017 recently showed late payment by large UK businesses falling to the lowest level on record, with roughly 15% of invoices to large customers still settled late. That is real progress. It is also, as the reporting rightly points out, still about one invoice in every seven.
Meanwhile the aggregate remains brutal. Analysis by campaign group Good Business Pays of around 5,000 company filings found that £109.2 billion in invoices were paid late between January and September 2025, with suppliers waiting on average more than 50 days for payment and 127 firms declaring average payment times beyond 80 days. Government estimates put the cost of late payment to the UK economy at close to £11 billion a year, affecting roughly 1.5 million small businesses — around 28% of all businesses — with an estimated £26 billion outstanding at any one time and roughly 14,000 business closures annually attributable to it. That last figure is often reported as 38 businesses every day.
Trade credit insurer Coface’s first dedicated UK payment survey put a further edge on it: 90% of UK companies reported experiencing late payments in the preceding year, with 44% saying delays had become more frequent, and an average payment delay of 32 days. For comparison, the equivalent figures in that survey were 85% in France, 81% in Germany and 60% in Poland. The UK is an outlier among its close economic peers, and not in a flattering direction.
Sector matters too. Manufacturing has consistently reported the longest payment times and the highest proportion of late invoices of any sector under the reporting regime, while London has consistently recorded the shortest. If you supply into industrial chains from a regional base, you are on the wrong end of both.
And there is a second-order effect that many owner-managers miss. Sage’s SME Performance Pulse, drawing on anonymised accounting data from around 150,000 SMEs, found British SMEs themselves stretching out to an average of 37.1 days to pay their own suppliers, up from 31.9 days a year earlier. Squeezed businesses pass the squeeze downstream. Which means your suppliers are looking at your payment behaviour with exactly the scepticism you apply to your customers.
That scepticism has consequences. The same government-linked research found 15% of surveyed businesses had actively avoided working with specific customers because of their payment behaviour. Your payment record is not a private matter. For any business large enough to fall inside the reporting regime it is literally published, and any prospective supplier can look it up before quoting you.
Your suppliers are pricing your admin. They may not itemise it, but the firm that pays on the 30th and answers queries within a day gets a different number to the firm that pays on the 58th after three reminders.
The rate on the money, incidentally, is not trivial. Statutory interest under the Late Payment of Commercial Debts (Interest) Act 1998 runs at eight percentage points above the Bank of England base rate — with the base at 3.75% since December 2025, that puts the applicable rate at 12.50% per annum, plus fixed recovery costs. Most suppliers do not invoke it. The ones who have stopped believing in the relationship do.
The Compliance Layer Nobody Signed Up For
Ten years ago, onboarding a new supplier in a British SME meant getting their bank details and a copy of their public liability certificate. That is no longer true, and the change has happened gradually enough that a lot of businesses have not updated the process.
The Modern Slavery Act 2015 requires organisations above £36 million turnover to publish an annual transparency statement — but the practical burden lands far below that threshold, because those larger organisations discharge their obligation by pushing due-diligence questionnaires down to their suppliers. If you sell into a large corporate or a public body, you are answering their questionnaire, and you are increasingly expected to be able to evidence that you have asked similar questions of your own supply chain.
The Procurement Act 2023 raised the bar again for public-sector supply chains, introducing exclusion grounds tied to matters like fraud and sanctions, and new rules now oblige government contractors to pay suppliers within 45 days. UK GDPR sits across all of it wherever a supplier touches personal data, which — with cloud tools, logistics partners and outsourced services — is most of them. Layer on Scope 3 emissions data requests, ISO documentation, EDI expectations and insurance verification, and supplier onboarding has become a genuine records-management discipline.
Here is where it goes wrong. As specialist supplier-management commentary in the UK has noted, most of this compliance ends up living in email inboxes and shared drives. It exists, technically. It is simply not retrievable at the moment somebody asks for it. When a client’s procurement team requests evidence of how you assessed a particular supplier in 2024, “it’s in someone’s Outlook” is not an answer, and the person who sent that email may well have left.
The Commercial Payments (Late Payments) Bill currently making its way through Parliament promises what the Government has described as the toughest payment regime in the G7, with proposals including a role for the Small Business Commissioner in reviewing reported statistics and potentially fining companies that pay a significant proportion of suppliers late, alongside a 30-day deadline for disputing invoices and a binding arbitration route for smaller firms. Whatever the final shape, the direction is unambiguous: supplier payment and supplier documentation are moving from “internal hygiene” to “externally scrutinised”.
That is not a reason to panic. It is a reason to have someone whose actual job includes keeping the file straight.
What a Supplier and Vendor Liaison VA Actually Does
This is the part where generic content about virtual assistants tends to go vague. So here is the concrete version, drawn from how these roles are genuinely structured at VAConnect for UK clients.
The Daily Layer
The VA owns the supplier inbox. Not “helps with” — owns. Every inbound supplier email is triaged within the working day: acknowledged, categorised, actioned or escalated. Delivery confirmations are checked against open purchase orders. Discrepancies are queried the same day rather than discovered three weeks later during a reconciliation. Quotes requested on Monday are chased on Wednesday, because a quote that arrives after you have priced the job is worse than useless.
The practical effect of this is that your suppliers start getting answers. That sounds small. It is the whole game. The Shopify merchant community is full of threads from retailers describing exactly the opposite experience from the supplier’s side — requests sent into silence with no way to confirm they were even seen, one merchant describing being left waiting on a response that might never come, unable to move forward with any certainty. When your business is the one that always replies, you become the account people prioritise.
The Weekly Layer
Purchase order status review. Aged creditor review, flagging anything approaching terms so the decision to pay or delay is deliberate rather than accidental. Aged debtor chasing on the sales side, with a proper escalation ladder — reminder, call, formal notice — rather than an increasingly apologetic email sent by the founder at midnight. Delivery schedule confirmation for the week ahead. A short written summary landing in your inbox on Friday: what is on track, what is at risk, what needs a decision from you.
The Monthly and Quarterly Layer
Supplier performance tracking against whatever measures actually matter to you — on-time delivery, quote turnaround, defect or return rate, pricing drift. Contract and renewal calendar management, so you find out a contract auto-renews before it does. Onboarding pack management for new suppliers: the insurance certificate, the modern slavery statement, the data processing agreement, the verified bank details, all collected, filed against the supplier record, and diarised for expiry. Price benchmarking across your active vendor list.
The Relationship Layer
Scheduling and preparing quarterly supplier reviews. Drafting the difficult emails — the delay, the quality complaint, the request for extended terms — in a register that protects the relationship. Maintaining the contact map, so when your account manager at a key supplier moves on, you find out from a handover rather than from a bounced email six weeks later.
There is a specific reason this layer belongs to a person rather than a system. Research on buyer–supplier relationships consistently finds that relational communication — the sharing of information, and crucially its quality and frequency — drives supplier trust, and that trust in turn drives relationship satisfaction and performance. Qualitative work in the field describes trust as having cognitive, affective and behavioural dimensions: perceptions of reliability and competence, emotional bonds built through repeated interaction, and observable follow-through. None of those are built by a well-configured workflow. They are built by the same named human turning up, week after week, and doing what they said.
Frequency and quality of communication are not soft factors in supplier relationships. In the research literature they are the mechanism by which trust is formed — and trust is what determines who gets served first when capacity is short.
The Human in the Loop: Why Automation Alone Fails Here
There is an enormous amount of noise about AI agents in procurement right now, and a fair amount of it is justified. The realistic 2026 picture, as set out across industry analysis, is that AI agents can handle a meaningful share of transactional procurement — one credible projection puts it at 60–70% of end-to-end transactional work over 2026–2028. Microsoft has shipped a supplier communications agent inside Dynamics 365 that tracks supplier performance and detects delays. NEC has reported cutting certain procurement negotiations from hours to under a minute using machine buyers. Nearly three-quarters of organisations in an Ivalua-commissioned UK study said they plan to increase budgets for AI-powered procurement and supplier management tools.
So why not simply automate supplier liaison and skip the headcount entirely?
Because the same analysis that projects heavy automation is consistently explicit about what stays human. Industry commentary describes a structured redistribution of work, not total automation, with humans retaining strategic sourcing, complex negotiation, supplier relationship management and high-value financial commitments. Procurement technology vendors themselves — hardly a disinterested party — describe the realistic 2026 position as agents handling routine decisions under supervision, within human-defined approval thresholds and escalation rules, rather than running sourcing unattended. One supply chain report quoted a practitioner making the adoption point plainly: simple use cases can deliver value within weeks, while for more critical parts adoption is slower because trust has to be built.
There is also a specific technical failure mode worth understanding. Procurement processes are not quick transactions. A supplier qualification can run for weeks. A contract negotiation can stretch across months. A multi-round tender involves dozens of decision points spread over time. Systems that lose context between interactions effectively start from scratch each time — which is precisely the wrong property for a function whose entire value is continuity.
Then there is the part that no benchmark measures. When a delivery fails and a client’s project is at risk, the thing that determines your outcome is whether the person at the other end wants to help you. That is a function of accumulated goodwill: the times you paid early without being asked, the time you flagged their invoicing error instead of exploiting it, the fact that a named human at your business has phoned them about something other than a problem. An agent that responds autonomously to a delay notification is efficient. It does not build the credit balance you draw on when things go wrong.
The strongest model, and the one that works in practice for UK SMEs, is a trained person operating good tools. The VA uses automation for what automation is genuinely good at — reminders, reconciliation, status tracking, document collection, structured reporting. The judgement, the tone, the relationship and the escalation stay human. Procurement teams that digitised core tasks like purchase order creation, invoice matching and supplier onboarding reportedly cut manual workloads by around 40%; that is the leverage. It is leverage applied by someone, not instead of someone.
The South African Advantage
Here is where the arithmetic gets genuinely difficult to argue with for a British business.
Time zone. South Africa sits at GMT+2 — one hour ahead of the UK in winter, two ahead in summer. That is not a workaround. It is the single most favourable offshore alignment available to a UK business. A VA in Johannesburg or Cape Town starts before your team does, which means that by 9am UK time the overnight supplier emails have been triaged, the delivery confirmations checked, the discrepancies queried and the day’s chase list built. Compare that to the Philippines or India, where “overnight coverage” means your supplier queries are answered while your suppliers are asleep, or the Americas, where your supplier’s morning is your VA’s night. Supplier liaison is a synchronous function. It requires being awake at the same time as the people you are liaising with — and your suppliers are almost certainly on European hours.
Language and register. This matters more in supplier communication than in almost any other VA function, because the entire job is written and spoken persuasion under mild adversarial pressure. South African business English is British-derived: the spelling conventions are British, the date formats are British, and — more subtly — the register is. There is a reason British suppliers respond differently to “I wanted to check whether there’s any flexibility on the March delivery” than to “Following up again on this, please advise ASAP.” Marketing commentators have described the difference bluntly: Americans like to be sold to, Britons like to be persuaded. A supplier chase email written in the wrong register does not just fail — it costs you standing with a firm you need.
Cost against quality. South African VAs typically cost UK businesses somewhere between a third and a half of a comparable UK hire once you account for employer’s National Insurance, pension auto-enrolment, holiday, sick pay, equipment and recruitment. But the relevant comparison is not against a UK employee, because most SMEs in this position are not hiring a UK employee. They are doing nothing, and absorbing the cost in the founder’s evenings. Against that baseline, the return is not incremental.
Talent depth. South Africa produces a large annual cohort of commerce, finance and business administration graduates into a domestic labour market that cannot absorb them all. The consequence for UK buyers is a supply of genuinely qualified people — bookkeeping-trained, systems-literate, often with prior experience inside procurement or finance functions — available for roles that a UK employer would struggle to fill at any price.
VAConnect has operated in this space since 2008 and has been a managed VA business since 2014, delivering over 100,000 hours and employing exclusively South African professionals. The distinction that matters for a function like supplier liaison is managed, not matched. A marketplace hands you a profile and a payment mechanism. If your VA is unavailable during a supplier escalation, that is your problem. A managed agency runs recruitment, vetting, contracting, ongoing training through VAVarsity, wellbeing and performance support, and — critically — continuity cover. For a role that is fundamentally about being reliably present, continuity is not a nice-to-have. It is the product.
Setting It Up Properly: The First 90 Days
The failure mode for this role is not the VA. It is handing over a chaotic function without structure and then concluding that delegation does not work.
Weeks 1–2: Mapping. The VA builds a complete supplier register — every active vendor, contact name and details, contract terms, payment terms, renewal date, annual spend, criticality rating. Most SMEs discover during this exercise that they have between 20% and 40% more active suppliers than they believed, several duplicate accounts, and at least one contract that has been auto-renewing unnoticed. The register alone frequently pays for the first quarter.
Weeks 3–4: Process capture. Shadowing and documentation. How a PO gets raised, who approves what, at what threshold, what happens when a delivery is short, who has authority to agree a price change. This gets written down — usually for the first time. The documentation is the asset; it survives any individual.
Weeks 5–8: Supervised handover. The VA runs the daily and weekly layers with review. Escalation thresholds are set explicitly: what the VA decides, what gets flagged, what stops and waits for you.
Weeks 9–12: Full ownership plus reporting. The VA owns the function and reports on it. A monthly supplier dashboard: on-time delivery by vendor, average quote turnaround, aged creditors and debtors, contracts approaching renewal, compliance documents approaching expiry.
Measure four things: days sales outstanding, days payable outstanding, supplier on-time delivery percentage, and hours of your own time returned. If DSO drops by even a week on a business with £2m of revenue, the working capital release is roughly £38,000. If your DPO becomes deliberate rather than accidental — paying strategically important suppliers early, managing others to terms — you are running a policy rather than reacting to whoever shouts loudest.
That last shift is the real one. Most SMEs do not have a payment strategy. They have a payment reflex.
The Gap Is Wider Than It Looks
What is striking, looking at the data together, is how much of this is unforced.
Late payment costs the UK economy something close to £11 billion a year and is implicated in around 14,000 business closures annually — and the mechanism, in a large share of cases, is not malice or insolvency. It is that nobody had the hours to run the process. Ninety per cent of UK companies report experiencing late payment. Businesses affected spend an average of 86 hours a year chasing. Meanwhile British SMEs have stretched their own payment of suppliers from 31.9 to 37.1 days in twelve months, passing the pressure down the line, and the compliance documentation that increasingly determines who gets to bid for the good contracts sits scattered across inboxes belonging to people who may no longer work there.
None of that requires a transformation programme to fix. It requires one competent, trained, permanently present person who owns the function, operating with decent tooling, awake at the same time as your suppliers, writing in a register your suppliers recognise, and building the accumulated goodwill that determines what happens to you on the bad Friday.
The businesses that have done this are not marginally better organised than their competitors. They get better payment terms, because they are credible counterparties. They get priority in constrained supply, because they are the account that answers. They can produce an audit trail in an afternoon rather than a fortnight. And their founders are not opening a laptop twice before leaving the house.
The businesses that have not done it are still improvising a genuine operational discipline in the margins of everybody’s day — and, quite reasonably, wondering why it keeps going wrong.
The Comparative Picture
| DIY Coordination | Generic Freelancer | VAConnect Managed VA | |
|---|---|---|---|
| Who owns supplier liaison | Founder or ops manager, between other duties | Whoever is booked this month | A named, dedicated professional |
| Supplier email response time | Hours to days; inconsistent | Variable; depends on availability | Same working day, triaged before UK 9am |
| Time zone coverage | UK hours, fragmented | Often 5–12 hours out of sync | GMT+2 — ahead of UK, aligned with EU suppliers |
| Written register | Correct but rushed | Frequently US-inflected | British English and business register throughout |
| Supplier register maintained | Partially, in a spreadsheet | Rarely; no ownership of continuity | Complete, current, with renewal and expiry diary |
| Compliance documents | Scattered across inboxes | Not in scope | Collected, filed against supplier record, expiry-tracked |
| Continuity if unavailable | Function stops | Function stops | Managed cover; documented process |
| Performance reporting | Ad hoc, usually after a problem | None | Monthly dashboard: OTD, DSO, DPO, renewals |
| Training and upskilling | None | Freelancer’s own initiative | Ongoing via VAVarsity |
| Cost against a UK hire | “Free” — paid in founder evenings and lost terms | Low hourly, high management overhead | Roughly one third to one half, fully managed |
| What breaks first | Chasing, then relationships | Consistency, then trust | — |
Supplier and vendor liaison is not admin. It is the function that determines your working capital, your lead times, and what your suppliers are willing to do for you when it counts.
If you are currently running it in the gaps, book a call with VAConnect and we will map what it would take to hand it over properly.
Sources
- Small Business Commissioner / London Economics, Late Payments Research: Estimating the total economic impact of late payments on the UK economy (2025)
- Coface, 2025 UK Payment Survey (October 2025)
- Good Business Pays, analysis of Payment Practices and Performance Regulations filings, reported in Business Matters (2025); and Business Matters on record-low large-business late payment (2026)
- Sage, SME Performance Pulse (2026); FSB overdue invoice data via Market Invoice, UK Late Payment Statistics 2026
- Supplio, Supplier Onboarding Checklist UK and Modern Slavery Act Compliance for UK Procurement Teams (2026); Travers Smith on the Commercial Payments (Late Payments) Bill
- ProcureAbility/ProcureCon, The State of Procurement in H2 2025; Planergy, Procurement Trends 2025; SupplyChainBrain and Supplier.io on agentic procurement in 2026; Hackett Group 2025 Key Issues Study
- Academic literature on relational communication, trust and buyer–supplier relationship satisfaction (British Food Journal, 2025; and related preprint research on trust dimensions in supplier–buyer relationships, 2024)
- Practitioner sentiment: Shopify merchant community threads on supplier responsiveness and sourcing risk (2025–2026)
- VAConnect (vaconnect.co.uk / vaconnect.co.za) company data