Plenty of work gets done on a phone call and a handshake. The absence of a signed contract makes a debt harder to prove, not impossible to recover.
This is one of the most common reasons people decide not to chase money they are owed. There was no signed contract, so they assume they have no claim. It is usually the wrong conclusion.
A contract does not have to be in writing to be legally binding in England and Wales. Most everyday commercial agreements are never signed. What matters is whether an agreement existed, and whether you can show it.
In broad terms, there needs to have been an offer, acceptance of it, something of value passing in both directions, and an intention to be legally bound. A quote accepted over the phone, followed by work done and a job completed, satisfies all of that. The signature was never the thing that made it binding.
What a written contract really gives you is proof. Without one you are not missing the agreement, you are missing the easy evidence of it. So the job becomes gathering that evidence from everywhere else.
Worth knowing: a part payment is powerful evidence. Someone who pays half an invoice has behaved as though they owe it, which is very hard to square with a later claim that they never agreed to it.
The same goes for silence at the time. A customer who received an invoice and said nothing for two months, then objected only once you pressed for payment, has a weaker position than one who disputed it the day it arrived.
If you have worked for the same customer before on the same basis, that history counts. Ten previous jobs invoiced the same way and paid without complaint tells a clear story about what both sides understood the arrangement to be.
This is why trades and small suppliers who think they have nothing often turn out to have a great deal. It is just scattered across a phone, an inbox and a bank statement rather than sitting in one document.
Being honest about the other side of it: a case is hard where there is no written trace of any kind, no witnesses, the customer disputes both the price and the scope, and there is nothing to show what was delivered. Not impossible, but hard, and worth assessing properly before spending money on it.
The scope of the work is often more contested than the fact of the agreement. The customer accepts they asked you to do something, but not that they asked for all of it. Contemporaneous notes and messages are what settle that.
Before you chase, gather. Pull the messages, the quote, the invoice history and the bank records into one place, in date order. It takes an afternoon and it is the difference between a claim that can be evidenced and one that is just your word.
Then get it assessed. A debt with no written contract but a clear trail is often more recoverable than a signed contract for a customer with no money.
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