The Lotus Grand Tourers

Evening all
I’ve pulled the excel out this evening to take it for a run but the burning oil smell put me off !
The two plugs closest to the front have oil in the plug wells and there is oil leaking onto exhaust. The top rocker covers seem dry so assume it’s the cam tower to block gaskets which sounds like a bit of a job - could it be the o-rings or anything else?. I’ve done some searching but can’t find a how to guide. Help/guidance appreciated!
Cheers rich

When mine leaked around there it was the front camshaft oil seals. Oil then runs back into plug holes and along bottom of cam carrier onto exhaust.

Clean everything off. Then run engine and see where oil starts to come from.