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Does anyone know if the government cares where the money comes from? I.e., my partner opens the ISA, I transfer her the money from my account and she then puts it into the ISA? Effectively it is my money going into two ISA's. I assume that is OK.
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We've been looking at it as well, and as far as I can tell that won't be relevant for the ISA but I think there are some tax rules about giving money away as gifts to people though (?)
The relevant part would probably be how much you're allowed to give away without any tax implication - I think it might be a lot higher for transferring to a partner anyway, so hopefully it won't apply either.
EDIT: just checked - for couples it isn't relevant, so no there shouldn't be a problem either way.