Speed cameras: the myths exposed - Pay £1 over the fine

'If you pay £1 over the correct fine, the DVLA cannot award penalty points on licences until you have cashed the refund.'

No.

Her Majesty's Courts Service deals with receipt of all fine payments and has dedicated fine collection units that are well able to deal with minor errors in payment amounts.

It is also their responsibility to endorse your licence and they will make sure that it is done properly.