I don't know. I'll be honest I've wondered that myself, but I don't think I'd carry them off nearly as well. I'd just look like Angelos Epithemiou.
The type he is wearing here are clearly based on the vintage NHS 524 design. I have no idea what brand they are - maybe someone else who knows more about glasses would have an idea. I would take a guess and say Ray-Bans?
Thanks Steve and Foggy for the info. It's time for new specs. Graham always looks cool in his.
https://blackeyewear.com I found this place which has some really cool vintage looking glasses.
you can't go wrong with the 50's style NHS frames. what i'd do is go with the frames that you like best.