London is the most populated city in the UK
oh cool! when was london established?
It was founded by the Romans and has been a major settlement for at least 2 millenia.
oh wow. is it a large tourist crowd in london?
Yes, London is a major global city with museums, history, castles, pubs, and entertainment which draws a lot of tourists. 
nice. any other cool fact about london? i dont know much about the city
It has the worlds largest city airport system as measured by passengers per year.