What would your 15/16yr old like to do in London for a day?

[brooksghost]

If your 15/16yr old was in London for a day (with parent), what would they like to do?
Happy for window shopping, car spotting, he's already picked where to eat...
Just wondering if I'm missing any of 'latest' things to do or whatever is the current trend to see/do/go.

If your DS is into cars/ formula 1, he might enjoy the Formula 1 Exhibit The Formula 1 Exhibition | London

Pop in to the Outernet installation at Tottenham Court Rd tube.
Camden Market?
Boat to Battersea Power station, maybe a trip up the chimney? Shopping and exploring the building
Science Museum