Ralf,
You can still fly aeroplanes non-radio in UK though there are not too many aerodromes available without making previous arrangements. Microlights are generally flown non radio and are operated on a "declaration of health" rather than a medical.
If you hearing does not allow you to obtain a JAA Class 3 medical, the new UK NPPL due out on 29 July will also operate with a restricted medical. Try contacting UK AOPA for details.
I don't think stalling is an issue because you only need to be able to see and feel to detect the approaching stall. If you couldn't do that then you clearly would not be able to get any form of medical.
So Yes there are possibilities in the UK try the AOPA and BMAA websites:
http://www.aopa.co.uk/
http://www.avnet.co.uk/bmaa/