That oil filter looks as inaccessible as the old transverse engined minis of the '60's. If Alec Issigonis went to Hell he will spending his days for the rest of eternity doing routine maintenance jobs on the Mini engine!
So many genius designs from Great Britain over the decades:
Hand clutch, foot shift on motorcycles
Supermarine Schpitfire (Meyer, you fat boy!)
Radar, Rho-theta
Chronometer
International date line
etc.
Then we have:
Lucas (anything, pick one...)
Chamberlin
10" wheels
BMC
etc.