27/07/2015 17:05 BST | Updated 27/07/2015 17:59 BST

Boris Johnson Apologises For Giving His Barrister Wife A 'Backie' On His Bike

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LONDON, ENGLAND - JULY 08: Boris Johnson rides his bicycle outside Global House on July 8, 2015 in London, England. (Photo by SAV/GC Images)

Boris Johnson apologised on Monday after giving his wife a quick "backie" on his bicycle. The mayor of London was criticised by the national cycling charity CTC for pedalling his barrister wife Marina Wheeler through the city late on Thursday evening. The charity said Boris "should have known better".

An official spokesman for the mayor said he was "unaware that he was apparently in contravention of the Road and Traffic Act." He said: "The mayor wishes to apologise for offering his wife a short lived lift on the back of his bike. He wasn't intending to ride all the way home from North Kensington to North London with Marina on the back, rather he was attempting to transport his wife to a main road, from where they hailed a black cab for her."

The spokesman added: "As everyone knows, the mayor is a huge supporter of cycling, and an even bigger fan of the black cab trade, hence his desire to combine the two!"

Sam Jones, from CTC, said: "We wouldn't encourage other cyclists to carry passengers in such a fashion. We would never encourage cyclists to break the law."

Johnson's gesture could land him in trouble with the police as giving a “backie” is illegal under Section 24 of the Road and Traffic Act (1998) and offenders can be fined up to £200. The act states: "Not more than one person may be carried on a road on a bicycle not propelled by mechanical power unless it is constructed or adapted for the carriage of more than one person."

Passengers in a passing car caught Johnson on camera as the couple cycled along a Road in North Kensington. The footage, obtained by The Sun newspaper, shows Wheeler sitting on the saddle, without a helmet, clutching onto her handbag as Boris stands on the pedals.

After the passengers informed the mayor that he was breaking the law, Johnson stepped off the bike and said "night, night" to them. Last month Boris was caught on film telling a London cabbie to "f*** off and die."