First step came yesterday. I received my 1st credit card statements back (Bank of Scotland)and have calculated £196 charges over the last 5 years. Today I will proceed to the next step and ask for them back!
I am very pleased with the quick response. There was no £10 fee sent nor was it requested. Barclaycard on the other hand have confirmed they will send the information, but on receipt of £10 payment, I will send that today and see how quickly they respond.
1 credit card and 2 bank accounts to go.