Canadian photographer Philip Jessup, who is documenting the remains of wilderness in several large cities, has included the London’s Lee Valley.

Lea/Lee Transformations at London’s City Hall is an exhibition of 17 pictures taken by Philip Jessup in the valley south of the M25.

There are pictures of Turkey Brook, Bow Creek Ecology Park and sheep at the William Girling Reservoir. He found lilies in Pudding Mill River on the Olympic site in 2006. Abbey Creek near Three Mills looks particularly attractive even with the gas works in the distance.

The exhibition, sponsored by Thames Water, is at City Hall until Tuesday 10 June; admission free.