Hi mumstheword. My ds does the Hammond Associates program. They have changed it slightly so it is not all classical ballet. They also do pilates, jazz, contemporary, singing, drama, sometimes Spanish/Irish etc (but not tap). The audition takes the form of a ballet class though. The closing date for audition applications is usually April I think, audition in May.
I would look at Northern Ballet associates as well, if Leeds isn't too far. Can't remember what ages it starts at though
but there's a thread somewhere in this dance section with all the info. Closing date for Junior Associates of the RBS has gone already I think, but worth trying next year maybe? The closest classes are in Manchester. I also know of someone from Cumbria who went to the Scottish Ballet Associates in Glasgow...