If you have concerns about an individual doctor, you can contact the General Medical Council (GMC), although the GMC advises that it's often best to start with the local NHS complaints system. The GMC will consider whether a doctor is fit to practise and has the power to stop doctors from practising.
Website: www.gmc.org.uk
Address: Fitness to Practise Directorate,
St James's Buildings, 79 Oxford Street,
Manchester M1 6FQ
Tel: 0845 357 0022
Email: practice@gmc-uk.org
Other organisations
Action against Medical Accidents
Care Quality Commission
Independent Complaints Secretariat, Wales
Health Service Ombudsman
Nursing and Midwifery Council
Health Professions Council
Medicines and Healthcare products Regulatory Agency