I discovered this hidden gem by pure chance when i explored the area in one of my lunch breaks. Rochelle Canteen is hidden away behind the walls of three former victorian schools on Arnold Circus in London's Shoreditch. The atmosphere, upon entering the ground, is relaxed almost tranquil. The canteen itself is situated in the old bike shed and the kitchens' size almost belies it's output. The food is distinctively modern British; run by Arnold & Henderson, a household name of britisch cuisine. The guests are local creative types so that the atmosphere is more relaxed then anything else. In the summer you can also sit outside.
I love swimming and I love being outside. London is great if your into both these things. I swim at London Fields Lido which is heated all year round. Its best in the winter when the steam rises from the water and if your lucky its snowing a little on your head. If your brave you can also go for the unheated option of the Serpentine or Hampstead Ponds.