Nearly one in 10 men pay for sex
Men aged between 25 and 34 are most likely to use prostitutes
Men who pay for sex are most likely to be single
In UK brothels 85% of prostitutes are from overseas
Source: University College London and Home Office
"There is no emotional involvement [with the prostitutes]. At the risk of sounding cruel and heartless I don't think I do have a moral issue with it. If I did I wouldn't have done it."
Having visited prostitutes for 18 months, Pete says he was attracted while surfing on the internet.
Mark says he used to spend a lot of time trying to pick women up in clubs and bars. Now the 31-year-old business consultant from London doesn't have the time.
"I've not had sex with my wife for at least five years," he says. "In simple terms, it's how I get sex. I've not noticed a change in our relationship at all.