English National Opera - Britain's only full-time repertory opera company, based near Covent Garden. Includes dairy of what's on and booking information.
English Pocket Opera - Small-scale opera company. Provides details of future and past productions, outreach and education programmes, news and mailing list.
Pegasus Opera Company - Multiracial professional touring company. Provides background information on the organisation, contact details and prices for Friends of Pegasus.
AAC - Multi-ethnic ensemble opera company based in Wembley. Includes details of upcoming and past performances with photos.
Fettuccine Opera Company - Organising opera and operetta evenings for charitable causes. Company information, details of future events and contact details are provided.
The Carl Rosa Opera Company - Touring company. Includes company information and history, production details and diary of events.
Mill Hill Amateur Operatic Society - Includes membership and committee details, information for would-be members, news on the next production and details on past productions, including photos.
Company of Singers - Semi-professional singing group specialising in opera in West London. Lists past and future events, and links to opera/choral sites
Royal Opera House - The ROH in Covent Garden, now fully restored. Includes virtual tour, events and booking, press releases, information and directions.