You stated that where the money goes is a side issue. I personnally like to know where my money goes.
As for the price being only £10, yes that is now but as the Midwives have just found out that they are trying to put up their registration from £43 to £80 for the year. (Inflation busting or what)
If we are only paying for our name to be placed on a register, I am sorry but how much does that really cost. The trust or your employer should have your details and you should be on their liabilty insurance.