And unlike pornography or prostitution, there are virtually no laws regulating this form of sex work. All it takes is a computer, a decent webcam, access to a high-speed internet connection and a webcam hosting site.The hours are flexible, the working environment is safe and the salary can be very rewarding.

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And the Digital Economy Bill, which is currently on its way through Parliament, seeks to restrict minors’ access to pornographic material online.

Yet both laws focus on recordings, rather than live streaming; in effect, they turn a blind eye to webcamming.

This is odd, given that the British government has increasingly taken a heavy-handed approach to regulating sexual commerce.

For example, in 2014 a new law banned certain acts from being depicted and uploaded by British pornography producers.

Here, payment is voluntary, and performers are tipped for performing sexual and non-sexual acts.

This makes a show profitable for the performer, at a relatively low cost to the viewer.This is supposed to be justified by the greater risk of fraud associated with the credit cards used to pay for webcam sessions.But Varwijk, who has run for 15 years, claims that only 0.03 per cent of transactions result in chargebacks.Every single webcam transaction passes through – and profits – the banking system.According to Varwijk, the banking system charges between 7 per cent and 15 per cent for providing payment facilities – much more than the 2 per cent to 3 per cent they usually charge.In private chatrooms, performers are paid by the minute for a private show.