I might be wrong, UK law is different than the rest of the EU (you can opt out of the working time directive here).
That said, isn't it a 40 hour max on contracted hours? Otherwise it is completely un-policeable. The idea is that you can't lose your job for refusing to work past 40 hours (i.e. refusing to take overtime). But you are allowed to work the overtime if you so please.
That said, isn't it a 40 hour max on contracted hours? Otherwise it is completely un-policeable. The idea is that you can't lose your job for refusing to work past 40 hours (i.e. refusing to take overtime). But you are allowed to work the overtime if you so please.