Earlier quoted context omitted.
It is completely legal in the UK without any compensation. I saw companies adding clauses in their contract of 'and you agree to work overtime without any pay' by default and claiming 'it is our standard template, no one complained before you' when confronted about it. Once you agree to such contract, they pretty much own your time.
> It is completely legal in the UK without any compensation. This isn't strictly true. The Working Time Directive provides you the right to work no more than 48 hours a week. It is possible in the UK to opt out of the Working Time Directive, but it is not mandatory . You cannot be forced to do so. So whilst a UK company can legally add a clause that says "you agree to work overtime without any pay", they cannot force…
I'm nearly certain you are wrong on this point. A company definitely cannot fire you or mistreat you for not agreeing to the clause, but there's literally nothing in that page that you sent that would say it's illegal to not hire somebody just because they don't agree to the opt out.