The following links take you to a page with information on various opera, ballet and dance shows, performance or theatres within central london, with links to that theatre so that you can find out what's on (each list is in alphabetical order, by show / performance):

London Opera
English National Opera : The Coliseum - click for details of the 2005 season
HMS Pinafore / Our Man in Havan : Greenwich Theatre
Les Paladins : Barbican Theatre
Opera Holland Park : Holland Park Theatre
Peacock theatre : Sadlers Wells - opera, ballet and dance
Royal Opera House : Opera
Sadlers Wells : Opera

London Ballet
Royal Ballet (at the royal opera house) : Ballet
Sadlers Wells Ballet
The Nutcracker / Romeo & Juliet : English National Ballet
Peacock theatre : Sadlers Wells - opera, ballet and dance

London Dance
Belly dance Superstars : Bloomsbury theatre
Peacock theatre : Sadlers Wells - opera, ballet and dance
Stomp : Vaudeville theatre

London Concerts / Music Venues
The Astoria
Barbican
Barfly Club london
Brixton Academy
Earls Court
The Forum Kentish Town
Jazz Cafe camden town
London Docklands Arena
Ronnie Scotts Jazz Club
Royal Albert Hall
Shepherds Bush Empire
Wembley arena, conference centre, stadium

The Proms - this is london's annual classical music festival. It runs from Mid July to Mid September, during which there are almost nightly concerts at the Royal Alber Hall, many of which are televised or broadcast on the radio. There are also some 'proms in the park'. Click on the link for more information