Carlbmm

I can't select reverse - no nasty noises or warnings - just came out and no reverse! Any ideas - I I've in Southampton so any recommendations for a gearbox wizard also gratefully accepted.

When I try and spray the windscreen the motor makes the right noises but no water comes out. The jets don't seem to be blocked. Any suggestions as to how to get to the motor to see if there is a blockage at that end. Carlbmm