Blag Youth Theatre can't be beaten! Sorry but my girls have tried perform and stagecoach and whilst they enjoyed the familiarity of the productions they didn't get enough social or skills benefit from it and got bored very quickly.
Blag is not only hysterically funny and enjoyable it gives them an amazing opportunity to develop and have fun and pursue exams like LAMDA etc which all counts towards that all important job/uni application!!! They have made life long friends too!!