Sorry to rain on your parade, but it's not that remarkable. My daughter sat the test at Askes and auditioned at Prendergast where she was accepted. She doesn't read a note of music and her audition piece was her own composition on an African drum that we borrowed.
Jermyn Street, dear chap. Actually, I have a notion there is a travel shop in/near Covent Garden which may suit your needs. Can't for the life of me think what it's called.
You could try a bright/fun kitchen timer and see if he can perform a task (eg, clean teeth, get dressed) before the bell goes. Boys can be quite competitive.