I want to move to London someday. it's the biggest city in the UK.
I've never been there, but I've heard it is awesome!  What part of London do you want to live in?
Maybe Hertfordshire because it has a cool sounding name lol.
LOL!  That DOES sound cool!  The Queen lives in London, doesn't she?
Yes, it's also the world's most visited city and largest airport system.