Thanks for all the information all, and the arguments / discussions 
One final question! I may take some of your earlier advice and look at other ISA providers, as I have found Tesco offering 2% on theirs. The only problem with it is that their T&C's stipulate the following:
Am I right in thinking that this means if I save £1,000 (For the sake of an easier example) over the next 6 months (Until the end of the tax year), and then find a more attractive rate and wish to transfer elsewhere, as I transfer I will be paid 2% interest on the £1,000 I saved, but only for 6 months worth (So presumably £10), minus 1 month worth of interest (£1.60), effectively creating a new ISA (With an increased allowance) with the new provider, containing £1,008.40? Or will the interest still be paid at the end of the ISA's year, rather than the tax year, even though it's been transferred?
Thanks
!

One final question! I may take some of your earlier advice and look at other ISA providers, as I have found Tesco offering 2% on theirs. The only problem with it is that their T&C's stipulate the following:
If you would like to transfer your Tesco Bank Cash ISA to another Cash
ISA (including one of a different type offered by Tesco Bank) before the
end of your fixed rate term, we will charge you a fee equal to 30 days’
interest on the balance of your Account to do this. We will always contact
you to let you know if we are going to charge you a fee. If your Account
has matured, we will not charge you a fee for making a transfer.
Am I right in thinking that this means if I save £1,000 (For the sake of an easier example) over the next 6 months (Until the end of the tax year), and then find a more attractive rate and wish to transfer elsewhere, as I transfer I will be paid 2% interest on the £1,000 I saved, but only for 6 months worth (So presumably £10), minus 1 month worth of interest (£1.60), effectively creating a new ISA (With an increased allowance) with the new provider, containing £1,008.40? Or will the interest still be paid at the end of the ISA's year, rather than the tax year, even though it's been transferred?
Thanks
