Maurice Beddow Bayly, MRCS, LRCP England, (d. 1962), was a member of the National Anti-Vaccination League and the Animal Defence and Anti-Vivisection Society.

In his book Schick Inoculation Against Diphtheria, he argued against diphtheria vaccination on the basis of its dangers and the incorrect belief that diphtheria was not caused by Corynebacterium diphtheriae. Reciting the details required to understand the cure for pernicious anemia he presented them in his Anaemia and Pernicious Anaemia, as an attack on scientific research, dwelling upon the nastiness of eating raw liver (now known to provide the poorly absorbed vitamin B12 in high concentrations) and claiming that illumination with ultra-violet light cleaned the blood of the root cause of the disease. Other people's work continued with the elucidation of the demonstration of the intrinsic factor necessary for the vitamin's absorption) in gastric juice , simple and effective treatment with B12 and a Nobel prize .

He was a Theosophist, obituarised http://books.google.co.uk/books?ie=UTF-8&hl=en&vid=ISBN0766152251&id=vO9dBwXuzJ4C&pg=PA230&lpg=PA230&dq=%22Maurice+Beddow+Bayly%22&prev=http://books.google.co.uk/books%3Fq=%22Maurice+Beddow+Bayly%22&lr=&sig=-RXsk-QFjNVcIURq4NsUJKnV2gU in the Theosophist Magazine as "a much-respected member of the English section, active both in the Society and in work for the protection of animals".