I echo barry1010's advice about going to the Post Office. With all the bad news about passport delays the other year I turned up at my local main Post Office. I took plenty of proofs of address etc., (none of which were needed, just my old Passport). They took my photo, asked me the questions on the passport form, I answered them and that was more or less that. I paid the small amount extra and went away.
My new Passport arrived 10 days later.
Definitely use the P.O. service for the Driving Licence, i.m.o..