Geograph - photograph every grid square

The Capital Ring is a surprisingly green route that encircles London. Distance is 78miles; it threads together parks and open spaces, mostly following pleasant residential roads in between. The route is an initiative of the London Walking Forum. The route is very well signed, with a Big Ben logo TQ1678 : Three walk logos, Gallows Bridge. The route is a walker’s equivalent of the North and South Circular roads. Link

A network of walks from three points on the River Thames, including the Woolwich Flood Barrier, to Crystal Palace Park, linking together the open spaces of SE London.
Website: Link
See also Link

The River Quaggy rises near Farnborough and flows 17 km through SE London to meet the River Ravensbourne. In its upper course it is called Kyd Brook.
Wikipedia: Link