Put it in a taxable account in VLS 80 if that is what you like. It works like an ISA except that it isn't tax-free, but it is still incredibly good. If you are happy with your ISA provider, open an account there, otherwise check out the Monevator list.
Use INC funds not ACC funds; you'll pay the same dividend tax but you won't hate yourself when you do the paperwork.
In February or March, read about defusing capital gains (also on Monevator) and decide how much to sell - remember that you might want to set up next year's ISA allowances.
If there are two of you and you share finances, you get two lots of dividend and Capital Gains allowances - so it makes sense to split the house funds into two accounts.