They've outgrown Mad Science. They're not sporty. They've enjoyed some week-long theatre courses in the past but don't really want to do another one. PGL is expensive and they don't really want to be away overnight. DH works from home so we have some flexibility, but we need something to break up the holidays so they don't spend the whole summer indoors playing Minecraft. The South East seems to be full of options but we're in the Manchester area. Any suggestions or recommendations ?