OOO, I know on this one![]()
Some of the ISA's allow you to transfer the balance to a new bank, may cost however you need to check on your individual ISA.
Swings and roundabouts. Probably wouldn't be that different - all ISA rates are much the same. Having £3k in one bank at 6% and £6k in another bank at 6% will earn you the same interest as having them all in the same account at 6%.You would get more interest if they are in one place ? :s