Managing more than £1 million in outstanding debt is a significant operational risk for any business. At this scale, even small inefficiencies in credit control can create major cash-flow issues, strain supplier relationships, and slow down growth. The good news: with the right systems, processes, and escalation framework, you can recover more debt, recover it faster, and prevent the same issues from happening again.

This guide covers the fundamental principles, processes, and practical steps every business with a large debtor book should implement.

1. Know Your Numbers: Build a Real-Time View of Aged Debt

When the debtor book exceeds £1M, visibility becomes your strongest tool.

✔ Key reports you need:

• Aged Debtor Report (30/60/90/120+ days)
• Top 20 Largest Debtors
• Debtors by Risk Category (e.g., high-risk industries or buyers)
• Debtors by Credit Limit
• Promise-to-Pay Report
• Disputed / Query Accounts Report

Why this matters

You can’t chase everything at once. High-value and high-risk accounts should be prioritised for early intervention while low-risk accounts follow standard workflows.

2. Strengthen Your Onboarding and Credit Checks

Debt recovery starts long before the invoice goes overdue.

✔ Essential onboarding steps:

• Conduct credit checks (Experian, Creditsafe, Equifax, or sector-specific sources)
• Set clear credit limits and auto-review them
• Collect full business information (registered address, directors, PO requirements)
• Ensure the customer signs terms & conditions, including your right to charge interest and late payment fees
• Request upfront deposits or pro-forma for new or risky customers

Pro tip

A strong credit policy reduces the volume of debt you have to recover later.

3. Get Your Invoicing Right (Most Debt Begins Here)

Over 40% of B2B late payments stem from avoidable invoicing errors (wrong PO, incorrect address, missing info).

✔ Best practices:

• Send invoices immediately when the product/service is delivered
• Use automated invoice delivery (email + portal)
• Include full payment details and PO numbers
• Highlight your due date clearly
• Use automated reminders before the invoice becomes overdue

Reducing invoice disputes is one of the fastest ways to reduce aged debt.

4. Build a Structured Credit Control Process

A standardised workflow ensures consistency and speed.

✔ Example credit control timeline (0–60 days)

Phone contact is crucial

High-value debt often resolves faster when you speak directly with their finance team.

5. Use Technology to Scale Your Collections

With £1M+ in outstanding debt, manual processes will fail.

Recommended automation tools:

• Credit control platforms (Chaser, Satago, Upflow, or built-in accounting software)
• Invoice delivery tracking
• Customer portals for payment and dispute submission
• Automated overdue reminders
• Cash-flow forecasting software

Automating the routine allows your team to focus on strategic, high-value accounts.

6. Offer Structured Payment Plans (But Keep Control)

For customers facing temporary cash-flow problems, a payment plan is often the fastest route to recovering funds.

✔ Best practices:

• Require a written agreement
• Set clear instalment amounts and dates
• Maintain strict monitoring (missed payments trigger escalation)
• Consider charging contractual late payment interest

The goal is recovery—not becoming a long-term lender.

7. Escalate Early and With Confidence

Many companies wait months too long before escalating overdue debt, hoping customers will “sort it out”. For large balances, delay increases risk.

✔ When to escalate:

• No response to multiple reminders
• Repeated broken promises
• Debtor is over credit limit
• Signs of financial distress
• Invoice aged 60+ days with no payment plan

✔ Escalation options:

1. Professional debt recovery agencies
2. Solicitors issuing Letters Before Action
3. High Court enforcement (for judgments over £600)
4. Statutory demand (when non-payment is serious)
5. County Court claim

A good debt recovery specialist will recover significant value long before litigation is required.

8. Reduce Future Risk With Better Credit Policies

After clearing old debt, protect your balance sheet.

✔ Long-term improvements:

• Regularly review customer credit limits
• Enforce T&Cs consistently
• Use credit insurance for high-value accounts
• Move risky customers to pro-forma or deposit-first
• Segment customers by payment behaviour and assign tailored processes

Better prevention = fewer recoveries = stronger cash flow.

9. Train Your Team

Your credit control team should understand:

• How to negotiate
• How to spot risk early
• When to escalate
• How to record notes properly
• How to handle difficult conversations professionally

High-value debt recovery is not just admin—it’s a revenue protection discipline.

10. Consider Outsourcing for Complex or Aged Debt

For businesses with over £1M on the books, outsourcing a portion of collections often improves recovery rates.

Advantages:

• Faster recovery
• No emotional friction with customers
• Specialists know legal routes
• Preserves internal resources
• Often no win, no fee options available

You can outsource:

• Very aged debt (120+ days)
• High-risk accounts
• Overseas accounts
• Disputed invoices
• Debt requiring legal escalation

Summary: The Debt Recovery Formula for Large Debtor Books

Visibility + Process + Automation + Skilled Escalation = Higher Recovery, Lower Aged Debt, Stronger Cash Flow

Managing over £1M in outstanding receivables isn’t just about chasing invoices—it’s about adopting a system that prevents debt, accelerates payments, and gives your business the cash flow it needs to grow.