It’s something that many Londoners and their finances feel, but this confirms it – we have the most expensive transport fares in the world.

Research comparing fares across 20 cities that have a metro system found Tube users in London pay three times more than commuters in New York and four times more than Paris.

A peak-time pay-as-you-go single in London from zone one to six costs £5.10 and the daily price cap is £11.70. The study found the next most expensive city is Washington DC where the highest fare costs £3.79 and a day ticket is £9.32.

With the exception of Washington, passengers on London Underground pay more than double the residents of any other major city in the world.

The research was carried out by the campaign team of Labour mayoral hopeful Dame Tessa Jowell.

Ms Jowell, who has promised to freeze transport fares across the capital's transport network, said: "It's time Londoners are given a break from ever rising prices.

"If I become the next Mayor of London I will freeze fares as a first step and hope to go further.

“I'll introduce One Zone Weekends and one-hour bus tickets to help Londoners get round our city."