If You Had A Twin, But Didn't Realise...
Family Life6 mins ago
No best answer has yet been selected by Scarlett. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.As Merthyr Imp points out, there have been plenty of British Musicals. This link might be of some interest:
http://www.nodanw.com/shows_a/index.htm
One British musical I feel I have to plug is The Hired Man (Book & lyrics by Melvyn Bragg, Music by Howard Goodall). It's often described as "the English Les Mis". Unfortunately, the chances are you won't have heard of it, much less seen it but if you do ever get the chance to see a pro version you won't be disappointed.