You'll do exceptionally well to get a 981 for £35K, only one showing at OPCs right now and that's £38K. 987 Boxster and Caymans are bargains right now though, loads of them in budget.
If you don't mind FWD then the new ST is worth a punt, as is the Scirocco. That money puts you into a TTRS which would be a fabulous every day car with plenty of poke.
Tbh, I wouldn't look further than the M135i right now. It's pretty much the complete package at that sort of money.