Started up today to see if smell was still there, apart from oily smell on cold startup which went away, didn't get the strong petrol fumes like yesterday.
I did notice my oil was quite low (bottom of the bars on oil check meter), so topped it up about 750ml. Wondering if possibly that has anything to do with it.. Car is due for MOT and oil change in late December.
Had codes read 2 weeks ago to diagnose some drive off assistance, unlucky if something happened since then, will make sometime this week to take it to a garage however to see...
Thanks for replies so far.