These other web sites may be of interest to you:

Gay Abandon - Leeds, Yorkshire
Rainbow Voices - A Midlands based LGBT choir
The Pink Singers - London's Lesbian and Gay Community Choir
The London Gay Men's Chorus - The biggest and probably best known gay choir in Britain
The City of Brighton Gay Men's Chorus - We've sung with them, they've sung with us - we like them!
The Brighton & Hove (Actually) Gay Men's Chorus - the 3rd gay choir in Brighton!
Gloria - Ireland's only Lesbian & Gay Choir
Manchester Lesbian and Gay Chorus - the name says it all really.
Podium Paris - Un choeur incontournable de la capitale!
Equivox - Le choeur gai et lesbien de Paris. Merveilleux!

Choir Associations
British Choirs on the Net - "The UK's Largest Choral Community"
GALA - The Gay & Lesbian Association of Chorusses

Local Organisations
Sussex Beacon - A national care centre for men & women with HIV / AIDS related illnesses
Terrence Higgins Trust - The UK's largest HIV & AIDS charity
Brighton Lesbian & Gay Switchboard - Information, support and a friendly ear
International HIV/AIDS Alliance - Supporting community action on AIDS in developing countries

Not any of the above
The Hangleton Brass Band - A community music group based in the City of Brighton & Hove. Do you recognise their MD?
The Glens - Our accompanist Glen Capra has other strings to his bow, find out what else he's up to here.
Pink UK - Gay listing across the UK
Learning Signing - OK, this is a personal one as Ric & John are both friends and I've had a short 1hr taster of this and it was great. Have a look ...
REALBrighton - Covers the whole of Brighton from a gay perspective