The Post Office have gone back to the best interest rate for a fixed term fixed rate 2 year ISA with an interest rate of 3.6% you can find out more here:

Savings and Investments | Post Office®


  • open with a single deposit (min. £500; max. £5,340) or transfer-in a cash ISA held with another provider (min. £500).
  • you need to be over 16 years old and a UK resident.
  • withdrawals not permitted during the fixed term. Closures or transfers of the ISA within the fixed term will be subject to a breakage charge - if the interest you've earned doesn't cover this, you may get back less than you put in.
  • 2 year term: 3.6% tax-free / AER fixed.