For time in the very centre of London Chris and I would often choose to take a bottle of wine on the southbank. Sometimes this would mean buying a couple of glasses at the BFI (so we could avail ourselves of their patio seating) which we would then keep topped up from a bottle of supermarket Pinot, on account of their fancy London prices. And anyway, the patio seating was always overcrowded and somewhat uncomfortable.
Other times might see us camped outside of the Festival Hall, a good spot for people watching as the streams they make come to a confluence around the steps from the Golden Jubilee Bridges.
We would often stop to watch the bad skaters - kids come from miles around to mis-execute their finest skateboard tricks; I don't think I ever once saw any of them perfectly execute a stunt. They are bad skaters.