The AA Savings, Fixed-rate Savings Accounts, best 2 year bond, actually 23 months, but close enough and it's offering a decent interest rate:

Fixed-rate Savings Accounts : protection against fluctuations in interest rates - The AA

you can have either a online banking account or a postal acount, they both offer 3.35%:
23 Month Online £1 3.35
23 Month Postal £1 3.35

Account benefits


  • You are protected against fluctuations in interest rates.
  • Get a fixed rate of interest on your savings, so you know exactly how much your investment will earn for the term of the account.
  • Earn a return yearly or a regular monthly interest option with our 23 Month Fixed Rate Savings Account, or a yearly return with our 5 Year Fixed Rate Savings Account.
  • Invest from £1 up to £5 million in your savings account per investor.
  • With our 5 Year Fixed Rate Savings Accounts, withdrawals are allowed subject to a loss of interest charged on the amount withdrawn. Withdrawals are not permitted with our 23 Month Fixed Rate Savings Accounts. Please refer to the specific terms & conditions.