Here is a guide to the UK driving licence number format. Digit 1–5: The first five characters of the surname (extra 9's added for names shorter than 5 letters) Digit 6: The decade digit from the year of birth (e.g. For 1977 it would be 7) Digit 7–8: The month of birth (+5 for the first character if female). Driving licence number Check code. I don’t know the driving licence number. DRIVING LICENCE RECORDS CHECK is the service that fleet. What algorithm is used to generate the check digits of the drivers license number. Ei System 3001 Drivers Download on this page. Used to generate valid drivers license. Uk/browse/driving for.