Mass pillow fight on International Pillow Fight Day. Trafalgar Square, London, April 2, 2011.

Removing the finished compost from a domestic wormery that turns household waste into fertiliser. After emptying the compost is spread thinly and a heap is made in the centre. The worms all burrow into the heap, the remaining compost is bagged up and the heap used as a starter for the next batch.