- Alpha thalassaemia
- Ambulatory Care Service
- An introduction to our breast services and what to expect
- Anaesthesia at UCLH
- Animal and human bites
- Anorectal physiology
- Anterior Resection
- Anti-D prophylaxis in pregnancy
- Aphthous Ulcers
- Appointment Preparation using MyCare UCLH
- Ascitic drainage
- Aspirin in pregnancy
- Audiology Service
- Auditory processing disorder - A guide to help your auditory perception
- Auditory Testing (adults)
- Aural (Ear) Microsuction
- Autogenic training
- Automated red cell exchange for people with sickle cell disorder
- Autonomic Function Test (AFT) (Autonomic Unit)
- Autonomic symptoms (Post-COVID Service)