I've already got a cash ISA with NatWest
If you've already got a cash ISA with Natwest, or you've just opened a new one, you can start the transfer process by filling out the online ISA Transfer Request form.
If your current ISA provider isn't listed on the online ISA Transfer Request form you can print this paper ISA Transfer Request form (PDF, 94KB), fill in the details and post it to: ISA Transfer Team, Everyday Banking, PO Box 5612, Manchester, M61 0WN.
If you want to transfer a stocks and shares ISA to a cash ISA, you'll need to complete this paper ISA transfer form (PDF, 111KB)