Now I'm back in the house I'm perfectly fine. It's warm but perfectly manageable. Work was hell though! Full safety gear. Heavy trousers and a long sleeved t-shirt. The aircon in my truck packed up on Monday morn and couldn't get it fixed till this afternoon so it's been sweaty to say the least.
Was 36C in the cab at one point when I was waiting onsite but was tolerable when driving with the windows down. Considered having the week off as I'm self employed but would've cost me at least a grand so I decided I'd rather just be a bit hot.