Founded in 1853 the RPS is one of the oldest photographic societies in the world.
In 1991 David became a Fellow of the Society (FRPS) after submitting two panels of images of African wildlife.
Both were accepted.
This is the trade association for picture libraries in the UK.
For many years, whilst running his Stock Library Images of Africa Photobank, David was a member of BAPLA.
Alamy, who market his images nowadays are members.