A plain-English explanation of why this 50-year-old statute is one of the most useful tools you have when a debt collection agency is chasing you.
The Consumer Credit Act 1974 (CCA) regulates almost every form of consumer borrowing in the UK — credit cards, store cards, catalogues, personal loans, hire-purchase agreements, and most other forms of regulated credit. Mortgages and most overdrafts are largely outside it. If your alleged debt is a credit card, a store card or a personal loan from a regulated UK lender, the CCA applies.
Section 77 (for fixed-sum credit) and section 78 (for running-account credit like credit cards) give you a statutory right to demand a copy of the executed credit agreement. The mechanics:
In practice, many debt buyers cannot produce the original executed agreement — especially on old debts that have been bought and sold multiple times. A properly served s.77/78 request is often enough to pause collection entirely.
Before a creditor can enforce most regulated agreements (terminate them, demand the full balance, repossess goods), it must serve a Default Notice in the prescribed form under section 87. The form is set by SI 1983/1561 and is strict — defective notices are routinely found by the courts to be invalid, which can defeat enforcement entirely.
When a debt is sold, the sale only gives them the right to sue if it was done properly in writing with notice to you — if not, they may have no legal right to take you to court.
The rule is section 136 of the Law of Property Act 1925, and it has three requirements: the assignment must be absolute, in writing under the hand of the assignor, and notified to you in writing. Without all three, the assignment is at best equitable — and an equitable assignee usually cannot sue in their own name.
An unenforceable debt is still a debt that exists in law, and you still technically owe it. What changes is the power behind it: while the default continues, they cannot use the courts to force you to pay. No court claim, no CCJ, no bailiffs — the legal machinery of enforcement is switched off.
In practice, that is often decisive. Chasing a debt costs an agency money, and a debt they cannot take to court is one many agencies eventually stop chasing and write off — which is why unenforceable debts often become practically uncollectable. But that is a common outcome, not a guarantee, and it is never the same as the debt being cancelled.
This distinction matters because some online "debt advice" conflates the two and recommends actions (such as stopping all payment immediately) that can damage your position if the statutory unenforceability argument later fails.
Settling is always your choice — nothing about this process stops you paying or making an offer at any point. In fact, an unenforceable debt can often be settled for much less than the headline figure, because the agency knows it cannot take you to court to collect it. If you do settle, get the terms in writing (full and final settlement) before paying anything.
If you receive a court claim form, a statutory demand, or any document with a sealed court mark, stop and get advice immediately. Free regulated help is available from StepChange, Citizens Advice, National Debtline and Law Centres.
The Act itself is on the government's legislation site: Consumer Credit Act 1974 — legislation.gov.uk
This guide is educational. It is not legal advice. Debt Challenger is administrative software, not a law firm.