Outsourced Credit Control for NHS Medical Device Suppliers
Winning an NHS contract is a significant achievement for any medical device or equipment company. NHS Hospital Trusts represent some of the most stable, long-term customers a UK SME can have. The orders are consistent, the volumes are meaningful, and the relationship — once established — can underpin years of reliable revenue. But there can be issues when invoices are paid late.
If NHS Trusts pay their SME suppliers an average of 60 to 90 days after invoice date — despite standard 30-day payment terms, for a medical device business with a turnover of £1m to £10m, the cash tied up in unpaid NHS invoices at any given time can run into hundreds of thousands of pounds.
This article examines why NHS medical device suppliers face a unique set of credit control challenges, what the real risks of unmanaged invoicing are, and why outsourced credit control — done professionally and with an understanding of the NHS environment — is one of the most effective steps an SME supplier can take.
What Is Outsourced Credit Control for NHS Suppliers?
Outsourced credit control means handing the professional management of your invoice ledger — from initial follow-up to dispute resolution — to a specialist third party, so that invoices are chased consistently, professionally, and without affecting your NHS relationships.
In practice, this means a dedicated credit control professional manages your sales ledger on your behalf. They send courtesy reminders before invoices fall due, follow up promptly when they do, handle invoice queries with your NHS contacts, and maintain a clear record of every outstanding account. Your NHS relationships stay intact and your cash keeps moving.
Unlike a debt collection agency — which becomes involved only after an invoice has already failed and typically uses aggressive tactics that can permanently damage NHS relationships — outsourced credit control is proactive. It begins at the point of invoicing, not after the fact.
Why Do NHS Medical Device Suppliers Face Unique Payment Challenges?
The NHS is not a single organisation. It is a collection of over 200 individual Trusts, each with its own procurement process, finance team, and internal approval chain — and that complexity creates payment delays that simple invoice chasing cannot resolve alone.
Several structural factors make NHS invoice management more complex than standard B2B credit control:
Decentralised purchasing — purchase orders may be raised at ward, departmental, or procurement level, creating mismatches between what was ordered and what is invoiced
Multi-department approval chains — a single invoice may require sign-off from clinical, procurement, and finance teams before payment is released
Volume and frequency — regular consumable orders to multiple departments generate high invoice volumes, making manual ledger management impractical
Relationship sensitivity — NHS buyers are long-term commercial contacts; suppliers are understandably reluctant to press them for payment in ways that might damage the relationship
Each of these factors, taken individually, is manageable. Collectively, and without a consistent process to manage them, they are the reason NHS debtor days for SME suppliers routinely run at twice the agreed payment terms.
What Are the Risks of Not Using Credit Control as an NHS Supplier?
The risk of leaving NHS invoices unmanaged is not theoretical. For a £3 million turnover medical device company operating on 30-day terms but experiencing 60-day average payment, approximately £493,000 in cash is tied up in unpaid invoices at any point in time. At 30 days — where it should be — that figure would be closer to £247,000. The gap is £246,000 in working capital that belongs to the business but is not available to use.
Cash Flow Pressure and Working Capital Erosion
Cash flow is the operational lifeblood of every business. Payroll, stock replenishment, supplier payments, and tax obligations arrive on fixed schedules regardless of whether your NHS customers have paid. A business that is profitable on paper can still face a crisis if its cash is locked inside unpaid invoices.
For a medical device SME, the working capital implications are particularly acute. Stock needs to be held in advance of orders. New product lines require investment. Sales growth — especially across multiple NHS Trust accounts — creates increasing invoice volumes and, without active management, increasing debtor days.
The Time Cost of Chasing Internally
UK SMEs spend an average of nine hours of staff time each month chasing overdue invoices. For the managing director or finance manager of a medical device company already managing product development, regulatory compliance, and NHS framework contracts, nine hours of invoice chasing each month represents a significant and poorly allocated use of expertise.
The time cost also compounds. As the business grows and the NHS ledger expands, the time required to manage it grows proportionally — unless a dedicated process is in place.
Relationship Risk
One of the most under-discussed risks of NHS invoice management is the relationship trap. Suppliers who chase their own invoices must navigate a difficult tension: they need the money, but they also need to maintain the goodwill of the NHS buyer they are approaching for payment.
This tension frequently results in suppliers waiting too long to chase, accepting informal delays without documented agreement, and failing to escalate overdue accounts when the circumstances warrant it. The outcome is a longer average payment time and, in some cases, invoices that are quietly written off rather than pursued.
Bad Debt Risk
The longer an invoice remains unpaid, the lower the statistical probability of recovering it in full. An invoice that is 30 days overdue is straightforward to recover. One that is 90 days overdue requires significantly more effort. One that exceeds 120 days, or that involves a disputed product code that was never formally resolved, may be unrecoverable.
Legal and Regulatory Exposure
Under the Late Payment of Commercial Debts (Interest) Act 1998, UK businesses are entitled to charge statutory interest at 8% above the Bank of England base rate on invoices paid late by commercial entities — including NHS bodies. Businesses may also recover reasonable debt recovery costs.
In practice, most NHS suppliers never exercise these rights. Not because they do not exist, but because invoking them risks the NHS relationship the business depends on. A proactive credit control process — one that manages invoices professionally from day one — means the Late Payment Act rarely needs to be invoked, because invoices are paid before the legislation becomes relevant.
What Are the Benefits of Outsourced Credit Control for NHS Medical Device Suppliers?
Outsourced credit control — applied consistently from the point of invoicing — typically reduces debtor days, frees up working capital, and removes the internal burden of ledger management. For NHS suppliers, it also resolves the relationship tension that prevents many businesses from chasing their own invoices effectively.
1. Faster, More Consistent Collections
A professional credit control service follows a structured, consistent process for every invoice — courtesy reminders before the due date, prompt follow-up when payment is not received, and clear escalation where necessary. Consistency is the key variable. NHS finance teams, like all finance teams, respond to suppliers who follow up reliably and professionally. A consistent process signals that you pay attention and expect to be paid on time.
2. Relationship Protection Through Arm's-Length Management
When a third party manages your invoice follow-up professionally and warmly on your behalf, the dynamic changes. Your NHS contacts are not being chased by the MD they met at a product demonstration last month. They are receiving professional communications from an accounts management service — courteous, factual, and entirely consistent with the supplier relationship. The cash is recovered. The relationship is preserved.
3. NHS Invoice Query Resolution
Product coding mismatches, missing purchase order numbers, and multi-department approval queries are among the most common reasons NHS invoices are delayed. An outsourced credit control service with NHS sector experience understands these issues and knows how to resolve them — identifying the correct contact within the Trust, clarifying the query, and ensuring the invoice is correctly reprocessed rather than left to sit in an unresolved queue.
4. Freed Internal Capacity
Removing nine or more hours of monthly invoice chasing from the managing director or finance manager's workload is, for most medical device SMEs, a material benefit. That time can be redirected to sales activity, product development, regulatory submissions, or client relationship management — the activities that actually grow the business.
5. Cost-Effective Compared to In-House Hiring
An in-house credit controller at junior to mid-level costs between £20,000 and £35,000 in salary alone — before employer's National Insurance (13.8%), pension contributions, recruitment costs, annual leave cover, and sick pay are added. The true annual cost of an in-house credit control function typically falls between £25,000 and £45,000 or more.
An outsourced credit control service operating on a fixed monthly retainer delivers the same professional expertise at a fraction of that cost — with no employment overhead, no service gap during absence, and no training requirement. The service is available from day one, scales with the size of the ledger, and is budgeted and predictable.
6. The Fixed Retainer Advantage
A fixed monthly retainer — as opposed to commission-based debt collection — aligns the incentives of the credit control provider with the interests of the business. A commission model incentivises large collections and may lead to aggressive approaches that damage NHS relationships. A fixed retainer means every invoice, regardless of value, receives consistent professional attention every month.
The Numbers That Make the Case
The scale of the late payment problem in the UK medical device sector is well-evidenced:
60–90 days — average payment time from NHS Trusts to SME suppliers, against 30-day terms
£493,000 in cash tied up in unpaid invoices for a £3m business at 60 debtor days
73% of UK SMEs have some form of outstanding late payment at any given time
9 hrs of staff time lost every month chasing overdue invoices in UK businesses
38 UK businesses close every day due to late payment (Office of the Small Business Commissioner, 2025)
£11bn estimated annual cost of late payment to the UK economy
Source: Office of the Small Business Commissioner 2025; Aldermore SME Growth Index; Coface UK Payment Survey 2025; FreeAgent invoice data (2m+ invoices).
What Has Changed Under the 2025 Late Payment Reforms?
The 2025 reforms to the UK's late payment legislation represent the most significant tightening of commercial payment obligations in a generation. NHS suppliers should be aware of the following changes:
A 60-day cap on business-to-business payment terms is now enshrined in UK law for the first time
A 30-day invoice dispute deadline — NHS Trusts must now raise disputes within 30 days of receiving an invoice, or pay in full
Strengthened powers for the Small Business Commissioner, including binding enforcement and financial penalties
Public sector supplier rules — suppliers tendering for contracts above £5 million must pay their own suppliers within 45 days
For medical device companies, the 30-day dispute deadline is particularly significant. It means that product coding queries or purchase order discrepancies must be raised formally and promptly by the Trust — reducing the scope for informal delays. Businesses that have a clear credit control process in place are best positioned to benefit from this change, as they are already tracking invoice status and following up before disputes have time to develop.
Is Outsourced Credit Control Right for Your Medical Device Business?
Outsourced credit control is not the right solution for every business. It is most valuable where one or more of the following conditions apply:
The business supplies regularly to NHS Hospital Trusts and manages multiple live invoices at any time
The MD or a member of the leadership team is currently responsible for invoice chasing — and that time could be better spent
Debtor days are consistently above agreed payment terms, and the business cannot clearly identify why
Invoices are being written off or allowed to drift beyond 90 days without formal resolution
The business is growing, and the invoice ledger is becoming too complex to manage without a dedicated process
Invoice chasing is being avoided for fear of damaging NHS relationships
If several of these resonate, the case for a structured, outsourced approach is compelling. The cost is modest relative to the working capital released. The process begins almost immediately. And the service is specifically designed for businesses that want professional results without aggressive tactics.
Summary
Supplying medical devices and equipment to NHS Trusts carries inherent payment challenges — not because NHS organisations are bad customers, but because their procurement and payment systems are complex, decentralised, and not optimised for the speed that small and medium-sized suppliers require.
The risks of leaving this unmanaged are real and cumulative: eroded working capital, lost management time, strained relationships, increased bad debt exposure, and a growing ledger that becomes harder to control as the business expands.
Outsourced credit control — applied proactively, professionally, and with an understanding of the NHS environment — addresses all of these risks. It recovers cash faster, protects NHS relationships, removes internal burden, and delivers consistent results at a cost that compares favourably with any alternative.
"We chase the invoices. You run the business."
Speak with that credit control
that credit control is a UK-based outsourced credit control service founded specifically for small and medium-sized businesses. We work with medical device and equipment suppliers who sell into NHS Hospital Trusts — managing their invoice ledger professionally, reducing their debtor days, and protecting their NHS relationships.
Our service runs on a simple fixed monthly retainer. No commission. No hidden costs. No surprises. We can begin almost immediately, and the first conversation is informal, no-obligation, and entirely on your terms.
Frequently Asked Questions
Can outsourced credit control work for NHS invoice management?
Yes. Outsourced credit control is well-suited to NHS invoice management because it provides consistent, professional follow-up without requiring the supplier to manage the process internally. A specialist service understands NHS procurement complexity, including product coding queries and multi-department approval chains, and can resolve issues that would otherwise delay payment.
Will outsourced credit control damage my NHS relationships?
No — provided it is done professionally and with a relationship-first approach. Outsourced credit control is not debt collection. It operates courteously, consistently, and at arm's length from the supplier's own sales relationship. NHS contacts receive professional communications, not pressure, and the dynamic is managed to preserve the long-term commercial relationship.
Can I charge statutory interest on late NHS invoices?
Yes. Under the Late Payment of Commercial Debts (Interest) Act 1998, UK businesses are entitled to charge statutory interest at 8% above the Bank of England base rate on invoices paid late by any commercial entity, including NHS bodies. In practice, proactive credit control means the Act rarely needs to be invoked — because invoices are paid before it becomes relevant.
How much does outsourced credit control cost for an NHS supplier?
that credit control operates on a fixed monthly retainer, which is agreed in advance and does not vary based on collections. This compares favourably with in-house credit control, which typically costs between £25,000 and £45,000 per year including salary, National Insurance, pension, and absence cover. Contact us for a quote based on your ledger size.
What are debtor days and how do they affect a medical device company?
Debtor days measure how long customers take to pay — calculated as (trade debtors ÷ annual credit sales) × 365. For a medical device company with £3m annual revenue operating at 60 debtor days, approximately £493,000 is tied up in unpaid invoices at any point. At 30 days — where it should be — that figure would be £247,000. The difference represents working capital that is available to the business.
How quickly can outsourced credit control be set up?
that credit control can begin managing your invoice ledger almost immediately after an agreement is reached. Setup involves sharing your customer list and sales ledger — a straightforward process that we guide you through. There is no lengthy onboarding period; the service is designed to start delivering value within days.
What is the difference between credit control and debt collection for NHS suppliers?
Credit control begins at the point of invoicing and is proactive — its goal is to prevent invoices from becoming overdue. Debt collection begins after an invoice has already failed and is typically reactive and, in many cases, more aggressive. For NHS suppliers, proactive credit control is the appropriate model, as it protects both the cash and the long-term customer relationship.