Tens of thousands of fare dodgers are travelling for free on the Transport for London network using a contactless bank card scam uncovered in a new documentary.

Passengers are avoiding paying for journeys by touching in on station exit gates with cards that have been declined for payment or otherwise blocked.

The exit gates are opening for them but no payment is taken from the card because it is not able to be charged, meaning the travellers can get on services for free.

The latest episode of Channel 5's hit series 'Fare Dodgers: At War With The Law' has revealed an estimated 26,000 cards are being used in such a way each year.

Today, the Daily Mail can exclusively reveal a clip of one Elizabeth line passenger allegedly being caught in the act at Hayes and Harlington station in West London.