Bubble shape, K reg.
Last time I changed the oil filter on my daughters car it was a pig of a job - no room to manoeuvre, chain and strap wrenches used but very awkward, had to jack the thing up and crawl underneath.
There's obviously a knack and/or a tool for this
Any clues before I need to do it again? - my wife also has one of these amazing little cars, so I'm going to do this job quite a few times I think!
My ideal is park the car, let the oil out, get the filter off without fuss (or ramps/jacks!), screw the new one on, fill up with oil and bobs your uncle (worked a treat on a collection of VX cavaliers and astras)