How to Legally Stop Debt Collectors in Their Tracks

A generic "Prove It" letter is an informal request asking a debt collector to confirm basic account details under FCA CONC 7 rules, which carries no statutory deadline and does not make the debt unenforceable in court. By contrast, a formal request under Sections 77 or 78 of the Consumer Credit Act 1974 (accompanied by the £1 statutory fee) triggers a strict 12-working-day statutory deadline. Under Section 78(6), if the creditor fails to supply a compliant copy of the credit agreement within 12 working days, they are legally barred from enforcing the debt in court.

Sections 77(1) and 78(1) of the Consumer Credit Act 1974 make the £1 fee a strict legal condition precedent—without it, the 12-working-day clock never starts. However, paying £1 via debit card or bank transfer is dangerous because automated debt collection software routinely logs electronic payments as a part-payment toward the balance, which resets the 6-year statute-barred limitation clock under the Limitation Act 1980. Personal cheques expose your bank details and authentic ink signature. A £1 Postal Order endorsed on the back with "Statutory fee under Section 78 CCA 1974 only — not a payment towards any debt" satisfies the statute while protecting your limitation defense.

Once 12 working days (excluding weekends and UK bank holidays) have elapsed from the date your Royal Mail Signed For letter was delivered, the creditor enters statutory default under Section 77(6) or Section 78(6) of the Consumer Credit Act 1974. While in default, the creditor cannot legally enforce the agreement, cannot obtain a County Court Judgment (CCJ), and cannot instruct bailiffs.

Under the High Court ruling in Carey v HSBC Bank plc [2009] EWHC 3417 (QB), a creditor can satisfy an informational Section 78 request by providing an honest and accurate "reconstituted" version of the agreement containing your exact name and address at inception, the original prescribed terms (credit limit, interest rate, repayment structure), and any subsequent variations. However, for agreements entered into before 6 April 2007, Section 127(3) of the Consumer Credit Act 1974 still requires proof that an agreement containing all prescribed terms was actually signed by the debtor to be enforceable in court.

Section 77 applies to fixed-sum credit agreements such as personal loans, car finance (PCP/HP), and consolidation loans. Section 78 applies to running-account credit such as credit cards, store cards, mail-order catalogue accounts (e.g. Very, Littlewoods), and regulated overdrafts. Section 79 applies to consumer hire agreements. Our free template covers both Sections 77(1) and 78(1) so you are protected regardless of account type.

In McGuffick v Royal Bank of Scotland plc [2009] EWHC 2386 (Comm), the court held that reporting a balance to credit reference agencies does not by itself constitute "enforcement" under Section 78(6). However, if a creditor cannot produce the credit agreement, cannot prove the date of original breach, or failed to serve a compliant Default Notice under Sections 87 and 88, you can formally challenge the accuracy of the default entry with Experian, Equifax, and TransUnion under Principle (d) of the Data Protection Act 2018 and ICO Credit Reporting Guidance.