Do you have at least £5000 that you can lock away for one year? Open a savings account via Raisin, there is a fixed rate one which gives 5.7% interest. This is one of the top interests savings account round atm.
Example:
Save £5000 = £285 interest after one year
Save £6000 = £342 interest after one year
Send me a DM and I will refer you. Once you've funded your savings account with the full deposit, we will each then get £25 within 14 days.