The London Mayoral candidate was left red-faced after a string of massage parlours offering "inner orgasmic movement" were discovered being managed out of a flat which he owned.

Among the services offered by Eva's Tantric Massages were "body to body massages", lessons on how to "touch a woman" and classes to help prevent "premature ejaculation".

There is no suggestion Mr Stewart was aware of the services, and the saucy business was kicked out after letting agents spotted what was going on.

According to the Sun, the actual massage parlor operated out of a property in East London, or a masseuse could be ordered directly to a hotel.

But the paper claims Companies House documents show the firm was being managed from Mr Stewart's flat by a young Romanian woman after the business was left to her by 'Eva'.

Responding to the revelations, a spokesperson for Mr Stewart said: "The Stewarts have rented the basement of their house for years.

"This has always been managed through a letting agency, and the terms of the rental agreements have always stipulated that there can be no business activity in the flat.

"As soon as the letting agency became aware that the tenant was in contravention of her rental agreement, they asked her to vacate immediately - and apologised to the Stewarts for the error."

It comes after Mr Stewart launched his #ComeKipWithMe campaign where he asked Londoners to invite him to spend the night in their home so he could see more of the city.

According to his campaign, the independent mayoral hopeful has already receieved over 2,000 offers from people living in the capital after he promised to bring his own sleeping bag and a "box of chocolates" to the sleepovers.