There are four main groups who own the West End (see below for a breakdown of their venues): Delfont Macktintosh Theatres, controlled by producer impresario Cameron Mackintosh; LW Theatres, controlled by musicals composer Andrew Lloyd Webber; ATG, or Ambassador Theatre Group, which is the largest theatre owner by number of venues; Nimax Theatres, which is controlled by Nica Burns and Max Weitzenhoffer; and The Nederlander Organization, an American entertainment company which also has a part share of the Adelphi Theatre.
The outliers are the independently run venues, including the Shaftesbury Theatre, which is owned by DLT Entertainment; the Theatre Royal Haymarket, which is owned by Access Entertainment; St Martin’s Theatre, which is still owned by the same family who built it, Lord Willoughby de Broke and his family; the Trafalgar Theatre, owned by Trafalgar Entertainment which owns other theatres in the UK and worldwide, but currently only one main West End venue; The Other Palace owned by producer Bill Kenwright; and the Bridge Theatre, run by Nicholas Hytner and Nick Starr.
In terms of theatres run as non-profit charities but that do not get a subsidy, these include The Old Vic and Shakespeare’s Globe.
Subsidised venues include the National Theatre, the Royal Court, Sadler’s Wells and the Peacock Theatre, the Barbican Centre, South Bank Centre, the London Coliseum (via English National Opera), and the Royal Opera House.
Also see: Society of London Theatre – Members | Broadway Theatres – Ownership
Delfont Mackintosh Theatres

Gielgud Theatre London

Noël Coward Theatre London

Novello Theatre London

Prince Edward Theatre London

Prince of Wales Theatre London

Sondheim Theatre London

Victoria Palace Theatre London

Wyndham’s Theatre London
LW Theatres

Adelphi Theatre London

Cambridge Theatre London

Gillian Lynne Theatre London

His Majesty’s Theatre London

London Palladium

Theatre Royal Drury Lane London
ATG

Ambassadors Theatre London

Apollo Victoria Theatre London

Fortune Theatre London

Harold Pinter Theatre London

Lyceum Theatre London

New Wimbledon Theatre London

Phoenix Theatre London

Piccadilly Theatre London

Playhouse Theatre London (Kit Kat Club)

Richmond Theatre London

Savoy Theatre London

The Tom Stoppard Theatre London
Nimax Theatres

@sohoplace London

Apollo Theatre London

Duchess Theatre London

Garrick Theatre London

Lyric Theatre London

Palace Theatre London

Vaudeville Theatre London
The Nederlander Organization

Aldwych Theatre London

Dominion Theatre London
The Shakespeare Globe Trust

Sam Wanamaker Playhouse London

Shakespeare’s Globe London
Trafalgar Theatres

British Airways Theatre London

Churchill Theatre Bromley London

Trafalgar Theatre London
DLT Entertainment

Shaftesbury Theatre London
Bill Kenwright Ltd

The Other Palace London
Access Entertainment
