Hiya!
I went to a Waterstones event a few days ago, at the great Piccadilly store. It was a QI talk, where John Lloyd (the founder of QI) and the QI Elves told us about the idea of the show, how it started, what they do, and gave us a sneak preview of facts from the next series 'N'. There was also an audience quiz, a guy won the prize of various items of cool merch.
It was really fun!
I got a book - 1,234 QI Facts to Leave You Speechless - and had it signed by Lloyd and almost all the Elves.
After the event, my friends and I browsed the books, squealing and sighing over the gorgeous clothbound classics (they looked gorgeous).
We're such nerds ;)
Anyway, we decided (at 9:30 pm, mind) to take a long route to the Underground so that we could see the Christmas lights on Regent Street and Oxford Street.
It was well worth it.