A FEW LINKS

SigNet AC	http://www.signet-ac.co.uk/
Shure UK	http://www.shure.co.uk/ProAudio/index.htm
Sennheiser	http://www.sennheiser.co.uk/
Sordin	http://www.sordin.se/EN/default.asp
Soundgenie	http://www.soundgenie.co.uk/
Reece Productions	http://www.reeceproductions.co.uk/
SoundPlus	http://www.soundplus.co.uk/
ICOM	http://www.icomuk.co.uk