[gambiting]

40 hours/week is maximum your contract in the UK can oblige you to work. Having said that, when I got my job in the games industry I had to sign a statement stating that I voluntarily decide to work over that limit(but I am not required to). And no, overtime is not paid.

[DanBC]

48 hours. http://www.hse.gov.uk/contact/faqs/workingtimedirective.htm

It is not legal to make you sign the opt out.

[gambiting]

Ok 48 hours. And yes, I was told I don't have to sign it, but it's one of these situations when not signing it is ill advised. And in the games industry if I was working more than 48 hours per week it would be because I want to,not because I have to.