HDRCMC works with a range of other organisations, including clubs and model shops, and is, of course, an active member of the British Model Flying Association.

Here are some initial links which might prove useful:

BMFA - http://www.bmfa.org/

Southwater Dabblers - http://dabblers.wikispaces.com/

Sussex Model Centre: http://www.sussex-model-centre.co.uk/