You'll definitely be able to get supply teaching work if you come to the U.K. I have a friend who has been doing supply teaching for the last term, and she was working 3-4 days per week at around £100 per day.

It's pretty good because it's flexible. If you wanted to travel to, er, Birmingham (?) then you could avoid working for a couple of days.

And BJ could become a busking one man band!