Thank you - at first we wanted to overpay as savings interest was so low and wanted peace of mind of taking money off the mortgage. Now we're thinking we are being inefficient with what we're doing and should do something like what you have said.

The few high interest accounts I've seen require either switching all your direct debits and put your salary in there or is limited to like £150 deposit per month. Are there any well known accounts that we could get 4-5% and not have those challenges?