Outside the Southbank Centre there is a temporary 'sea side', as a part of the Thames Festival, and they have put up little beach huts with different exhibitions in them. I really loved this one called 'Literature of the sea'. Why not sit down and read for a while?
Walking along the Thames is really one of my favourite things to do in London, and particularly if it is the middle of the week and you can avoid all the tourists. Worth doing if you're in London!
Hope you are all having a good week!