Tesco still pays 3% on a current account on balances up to £3000, but you can have more than one account. The MSE site is the best pace to look. To maximise interest you need to spread it around the best deals which tend to have low limits and you may decide it's not worth the trouble. When rates are so low it may be worth using Santander and then getting an income drawing down on the capital- if she withdrew £50 or £100 a month her capital would not fall much over the year and she could do this for the next 10-20 years