If this case is at all typical, it’s very tough for a doctor in the UK to be permanently barred from practicing medicine. As reported by The Daily Express:
Dr Ellen MacInnes, who has also been banned from driving three times, had to provide a blood sample to prove she was fit to get back behind the wheel, a disciplinary hearing heard.
… However the doctor, of Chelmsford, Essex, abused her position of trust and lied to one of her patients by inventing an illness and claiming she needed to take a sample of their blood. She also forged the signature of a fellow doctor.