Catalogues

International Association of Music Librarians - including a link to the Encore! catalogue of vocal/orchestral score sets
National Sound Archive

Orchestras

BBC Symphony Orchestra
London Philharmonic Orchestra
London Symphony Orchestra
Philharmonia Orchestra
Royal Philharmonic Orchestra

Performance

Making Music London - the London region of Making Music (formerly the National Federation of Music Societies)

Periodicals

Blues & Soul
Roots Magazine
Gramophone Magazine - including a link to an index of all gramophone reviews since 1983
New Musical Express (NME)
Q Magazine

Venues and events

Barbican Centre
English National Opera
Glyndebourne Festival & Touring Opera
Proms concerts
Royal Albert Hall
Royal Opera House
South Bank Centre
Wigmore Hall