Can anyone recommend a good garage in South East London/Kent? I came across a group on the web called Fisher Services in Lower Sydenham which appear to be endorsed by the MG Car Club - anyone know of these guys?

Maybe a bit far but you could try 'British Legends' based in Southend, Essex.

Another suggestion would be Apple Developments (www.appledevelopment.co.uk) based in Meopham, Kent. Again they may be too far for you but they get a thumbs up from me. It's run by two ex-Fairways Rover chaps.

try these guys www.auto-clinic.co.uk (http://www.auto-clinic.co.uk)
3/5 cawnpore st (off gipsy hill)
upper norwood
se19 1pf
0208 761 7482