The DVLA needs to be notified of a name change for two separate reasons: to update the name on your photocard driving licence, and to update the name on your V5C vehicle registration certificate (the logbook) if you own a vehicle. These are two distinct DVLA processes, even though they involve the same organisation. You will need to submit separate applications for each.
To update your driving licence, you use form D1, which is available from any Post Office counter or downloadable from the DVLA website. You complete the form, attach a certified copy of your deed poll, enclose your current photocard driving licence, and post everything to the DVLA at their Swansea address. The DVLA will issue a new licence in your new name and destroy your old one — it will not be returned. Processing takes two to four weeks. There is no fee for a mid-cycle name change.
To update your V5C vehicle logbook, you write to the DVLA or contact them via the GOV.UK website with the details of the change, enclosing the V5C and a certified copy of your deed poll. The DVLA will issue a new V5C in your new name. This is important not just for consistency but because your vehicle insurance is typically registered in your name, and a discrepancy between the V5C and your insurance records could cause complications. Notify your insurer at the same time.
While your driving licence is being processed — the period between posting your old licence and receiving your new one — you remain legally permitted to drive. Your driving entitlement is not affected during this period. Keep a note of your current licence number in case you are asked to provide it to police or for any other purpose.
If you hold a HGV or bus licence, or if your licence has any endorsements, the process is the same but it is worth confirming with the DVLA directly that all relevant records are updated consistently. International driving licences and foreign licences are not changed by the DVLA — contact the relevant authority in the country of issue for those.