Composite Landsat false colour image of Greater London, 1979.

Composite Landsat false colour image of Greater London, 1979.

City & South London electric train, 1890.

Composite Landsat false colour image of Greater London, 1979.

A group of people having a picnic.

A family enjoying a picnic on a beach in th

LNWR Picnic Saloon Interior, c 1920s.

Young man with two women on a picnic, September 1939.

'Restful Holidays on Quiet Waters', M & GNR poster, 1914.

'The Londoner's Leisure - The Thames', SR poster, 1926.

Couple having tea by a riverbank, 1940s.

Couple having tea by a riverbank, 1940s.