Thanks again John. I don't think I have a parasitic discharge, although I don't know how to measure this, but my fault is continuing and I believe it will fail due to this when M.O.T'd.
So far I have tried disconnecting battery and shorting the cars earth lead. No difference. I bought a ctek and recharged the battery, again no difference. I haven't tried to give the car a long run, as I believe is necessary after disconnecting the battery , could that be the problem?