It was a delight to see so many on the walk today.

Thirty people turned up at Tottenham Hale Station at 11am for the walk south to Three Mills promoted by Walk London and the Lee Valley Walking Week.

After Hackney Wick we left the official Lea Valley Walk route to go up on to the Greenway where we could view the Olympic Park. 

There were no children with us which was a pity but the enthusiastic adults of all ages walked the five miles very well. We arrived at Three Mills in two and a half hours -earlier than expected. Tesco did well thanks to its toilets and sandwiches but it would have been even better if the mill cafe had been open.

The next Walk London weekend is at the end of September.

This Saturday 31 May and Sunday 1 June there are guided walks in the Lee Valley as part of the Walk London weekend and the Lee Valley Walking Week.

I shall be leading the walk called ‘See the Olympic Park’ starting at Tottenham Hale Station. Meet at 11am outside the station which is on the Victoria Line and the overground out of Liverpool Street Station.

We shall be walking about 5 miles south on the Lea Valley Walk, passing through the Olympic Park, to Three Mills. Arrival should be well before the planned 2.30pm. Bromley-by-Bow Station is nearby.

On Sunday there is a chance to explore the Lea Valley Walk from the London boundary to Tottenham Hale with an ‘expert birder’.

Meet at 11.15am out Waltham Cross Station. Arrival time at Tottenham Hale is about 2.45pm

All walks are free. But do note that on Sunday the Victoria Line will be closed between Brixton and Highbury & Islington. 

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.