What is the law regarding secretly recording conversations?

its not illegal to record conversations but its is illegal to use them with out there permission but you are allowed by law to get a solicitor to listen to the transcript and write it down and verify the recordings as fact but the recording has to identify you and the doctor in some unique ref or way if the doctor denies the charges you could produce the evidence as defimation of your character etc but if you get a second opinion on your mental state from another doctor or two i think that would show malpractice on his side has he issued you medicine for your mental problems if not then as a doctor he is not treating you properly and that would be malpractice good luck