Can you have a pre-payment meter with a boiler, I don't think so.
Yes, of course you can John.
One point to note is that if these is a historical debt then the daily charge is set high to reclaim the amount owed.
Thenews always says there is one supplier who charges no more for a prepayment meter but no one ever says who!
Most prepays are 50% more than credit on SO.
Tony