You may find the following links useful. All links open in a new browser window.

Scottish Aeromodellers Association
www.saaweb.org.uk
Joining the SAA is the best way to gain your personal liability insurance. SAA membership automatically includes £1m of insurance to cover you against civil liability in the event of injury or damage caused by your helicopter.
British Model Flying Association
www.bmfa.org.uk
The BMFA is the British equivalent of the SAA. Their website has a good "For Sale" section.
RunRyder
www.runryder.com
RunRyder is an excellent site dedicated to all things heli. It has forums, galleries and private messaging.
HeliFreaks
www.helifreaks.com
HeliFreaks is an excellent alternative to RunRyder.