I work for the Murphy Kidman Edwards Performing Arts Academy so can sort 'mates rates' for various people (and of course fellow MumsNet-ers are all mates! ) if anyone is interested in a quality drama class in Southwark / London Bridge - behind Shakespeare's Globe Theatre, to be precise!
Anyway, £40 per term (equivalent £4 per class) is what I can offer if you're after a great class with focus on both confidence and performance. Plus there's an additional 10% discount for siblings. (Kids must be 6+.) We also have a talent agency attached so often get castings for our students too - if you like (not everybody does!).