Can an alcoholic be refused a doctor?

I am about to register with a new doctor, and I am a little worried. I have a pretty bad drinking problem (yes I know, yes I will, yes I am trying) and there is this whole alcoholic screening test thing. I have done it before and the results were.. shall we say not good. I am not in the habit of lying to doctors, especially as their help would go a long way towards getting past this. Trouble is I have heard various rumours that surgery’s now wont accept you if you are an alcoholic (I am in England) I was wondering if anyone knows if this is true?