Are There Any Restrictions On...
ChatterBank1 min ago
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For more on marking an answer as the "Best Answer", please visit our FAQ.You can have as many ISAs as you want with as many different providers as you want.
However, in any one tax year you can only open and contribute to one. Each year is technically a separate ISA, even if it is with the same provider.
So last year you could have had an ISA with say C&G.
This year you might have one with Leeds BS.
Next year you might have one with the Woolwich.
You can keep them all going - what you have to remember is that you cannot add any more contributions to the old ones - only roll up the interest.
The only thing to remember about transferring old ISAs is that some (not all) providers charge an exit fee which you'd have to weigh against the extra interest.