The following link will take you to the spreadsheets in the library. Personally, I've not bothered calculating the
overdraft
interest as my claim is quite small and i didn't feel it was worth it, so I'm unable to help you calculate the interest accrued on your overdraft - sorry, maybe somebody else can.
As per the FAQs in the library, the interest you claim for at the court stage is both the overdraft interest and interest of 8% for each charge, from the date you were first charged. The following link takes you to the spreadsheets in the library. You should not have asked for the 8% interest before starting court action, although I believe (again, check the FAQs or ask somebody else) that you could ask for the overdraft interest in your prelim letter and
lba
.
http://www.consumeractiongroup.co.uk...eadsheets.html
Hope this helps, sorry it's not the complete answer!