Barbara asked about Halifax. A word of advice: don't.
We had several ISAs with them. Halifax invested my wife's in the wrong account with a lower interest rate. They paid the discrepancy with a cheque but of course this fell outside the ISA envelope so became taxable. They said they could not replace the money in her ISA.
Sorting this out was a nightmare because they have three principal offices and one doesn't know what the other is doing.
We tried to open further accounts but received conflicting paperwork from different offices. Even simple matters took ages to resolve and hours on the phone. Over the past 24 months we received two £50 cheques in goodwill payments for our inconvenience but finally we gave up and closed all our accounts.
I wrote to Halifax regretting that I had to end a family association going back more than 50 years but the sheer frustration in dealing with them was impossible.
We have used smile, the Co-Op Bank's internet branch, for the past two years and are well satisfied. They pay 3% interest on our current account. They do use the iniquitous 0870 number but thanks to this site we have the geo alternative. Smile also replies promptly to secure messages from our banking homepage.
You might also check another excellent site
www.moneyfacts.co.uk for comparison of a wide range of accounts. This is where we found smile.
Hope this helps ...