no legal rquirement in uk to carry documents,
you may feel the need to if your driving something dodgy or at -THAT AGE!!LOL-
I live in notts and the police are used to seing my escort cosworth(ON THE RARE DRY DAYS!!) and on the odd occasion ive been followed home, just to make sure its me,
when they do the rolling police vehicle check and see my age/ address and a visual - i get left alone----
------------------WE ARE WATCHING YOU!!!!!!!!!!-LOL