Apply for or renew a driving licence by post and DVLA wants a printed passport-type photo in the envelope. What size and quality it must be, when someone has to sign the back, and how to attach it so it survives the post.
Yes, in one specific way: when you renew a photocard licence online, DVLA can pull the photo already held on your passport record. What you cannot do is resubmit an old photo file yourself.
Apply online with a UK passport and DVLA can take your photo and signature from your passport record, so you never supply a photo at all. Apply by post on a D1 and you need a printed passport-type photo.
From 70 you renew every three years instead of every ten, and it is free. There is no test and no automatic medical. What there is, is a photo — and a three-yearly cycle that catches people out.
A photocard licence must be renewed every 10 years. It costs GBP 14 online and GBP 17 by post, and driving on an expired photocard can attract a fine of up to GBP 1,000. Here is the process and the photo standard.
DVLA does not publish a photo standard of its own — it asks for a passport-type photo and points at HM Passport Office. Here is what that means in practice, and the places a licence photo differs from a passport one.