Weekend agency work

Conor:

djt1881:
But I do overtime regularly during the week and have signed a 48 hour average working week exemption so I wouldn’t think hours would be an issue.

There is no exemption to the 48hr average under the WTD (Mobile Workers) aka Road Transport Directive. The only thing you can opt out of is the 10hr limit for night workers. So if your current employers think that by signing an opt out you can average more than 48hrs a week then they’re sorely mistaken.

Because the OP is on UK domestic regulations he’s working under The Working Time Regulations 1998 in which the 48 hour week can be opted out of.