Hi
You can report this in writing to
H.M Revenue and Custons
PAYE
BX9 1AS.
Or by contacting our webchat facility at
Contact HMRC or phone the PAYE help line 0300 200 3300 and provide the name of bank or building society, sort code, account number, the untaxed interest amount and your individual share of untaxed interest from any joint accounts. We can update your PAYE record, so that future details can be provided directly from the bank / buiding society. A self assessment tax return would not be required where your interest is below £10000 and it is not required for any other reason.