From today London buses will accept contactless bank card payments as an alternative to an Oyster card.
Passengers who swipe their bank card will be charged the same as Oyster pay-as-you-go.
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The bizarre combination was filmed as it raced along Whitechapel High Street in East London.
The mayor claims America's Inland Revenue Service has hit him with a bill for unpaid tax on the sale of his home.
The tin was taken at around 4pm on Saturday, 8 November in The Parade, Coulsdon Road in Coulsdon.