David Noton / Cyclists riding bikes along riverside path at dawn, near Vang Vieng, Laos, March 2009.

Ernie Janes / London red bus going past Big Ben and the Houses of Parliament at Westminster, London, June 2013.

Mark Hamblin / 2020VISION / Mountain bikers on upland path on route to Ben Macdui, Cairngorms National Park, Scotland, UK, August.

John Waters / Illegally discarded rubbish and scrap metal close to the village of Westhay, Somerset, UK. January 2011.

Inaki Relanzon / Portrait of a young boy, sat on the handlebars of a bicycle, with his mother behind him,Inle Lake area, Shan State, Myanmar, Burma August 2009

Inaki Relanzon / Firewood transportation on a bicycle, Bago, Myanmar / Burma. August 2009

Pete Cairns / Victorian scarecrows - mock man and woman with bicycles, Strathspey, Scotland, UK

Aaron Gekoski / Born Free Foundation / Macaques on bicycles, performing in a show at the Dam Sen Amusement Park, Vietnam. Captive. August 2019. Mandatory credit: Aaron Gekoski / Born Free Foundation / naturepl.com

Staffan Widstrand / Wild Wonders of China / Woman riding bicycle. Guangzhou, Guangdong, China November 2015.

Eduardo Blanco / Cyclist beside Castildetierra mountain looking at rainbow over badlands of Bardenas Reales Natural Park. Navarre, Spain. February 2015.

Sergio Hanquet / Remains of a bicycle at the bottom of the sea, with marine life colonising it, Lanzarote, Canary Islands.

Guy Edwardes / Bicycle by river at Bayard's Cove, Dartmouth, Devon, England, UK. November 2005.

Konrad Wothe / Black redstart (Phoenicurus ochruros) malewith food perched on bike, Bavaria, Germany. May.

Philippe Clement / Levee / dyke and Nieuwe Sluis, lighthouse near Breskens which marks the entrance to the Western Scheldt / Westerschelde, Zeeland, the Netherlands, February 2019

Phil Savoie / Tour of Wales Bicycle race through Monmouthshire Wales UK. 10 September 2017

Pat Tuson / Commuter cyclists waiting for the lights to change, Hyde Park Corner, Wellington Arch in background, Central London, England, UK, June 2015.

Pat Tuson / Brompton Bike Dock, lockers holding Brompton folding bicycles for hire outside the Whittington Hospital. The solar panels above provide all the energy needed to power the Dock. Islington, England, UK,...

Pat Tuson / Bikes attached to railings showing the need for more bicycle racks in the vacinity of the station, Kings Cross, London, England, UK, August 2014.

Pat Tuson / Bike racks and taxies with St Pancras Station behind London, England, UK, August 2014.

Pat Tuson / Commuter cyclist in advanced stop lane with bus behind, London Borough of Islington, England, UK, July 2015.

Pat Tuson / Group of school children wearing high visibility jackets crossing the road, sometimes called walking bus, Hyde Park Corner, London, UK, June 2015.

Pat Tuson / Traffic on Euston Road, one of the most polluted road, in the country, London, England, Britain, UK, August 2014.

Pat Tuson / Santander Cycles or Boris Bikes, bicycle hire scheme docking station, corner of Hampstead Road and Euston Road, Camden, England, Britain, UK, March 2016.

Pat Tuson / Santander Cycles or Boris Bikes, bicycle hire scheme docking station with number 29 bus, corner of Hampstead Road and Euston Road, Camden, England, UK, March 2016.

Pat Tuson / Passengers walking towards Kings Cross train station, London, England, Britain, UK, August 2014.

Pat Tuson / Green Party poster on bike ridden by activist, General Election 2015, Highbury, Islington North Constituency, London England Britain UK, May 2015.

Pat Tuson / Commuter cyclists and pedestrians waiting to cross road, Hyde Park Corner, Central London, England, Britain, UK, June 2015.

Pat Tuson / Commuter cyclist in advanced stop lane alongside illegally positioned car, Angel, London Borough of Islington, England, UK, July 2015.

Chris Mattison / Bicycles parked near the Headstone Viaduct, part of the Monsal Trail cycle route, Peak District National Park, Derbyshire, UK July

Chris Mattison / Bicycles parked near the Headstone Viaduct, part of the Monsal Trail cycle route, Peak District National Park, Derbyshire, UK July

Alex Mustard / Discarded bicycle in the River Nene, Peterborough, Cambridgeshire, England. UK August. The bridge was build by William Cubitt in 1850 and is the only cast iron bridge still in use on a major high spe...

Jeff Rotman / Chimpanzee (Pan troglodytes) riding bike, Great Royal Circus, Bombay / Mumbai, India.

Kirkendall-Spring / Cyclocross bicycle race in Seattle, Washington, USA. November 2015.

Pete Oxford / Men cycling along road with fishing baskets on backs, Assam, North East India, November 2014.

Cyril Ruoso / Bird show with trained Blue-and-yellow macaw (Ara ararauna) and Sulfur crested cockatoo (Cacatua galerita) riding bicycles. Singapore Bird Park.

Juan Carlos Munoz / Rickshaws, bike cars and four wheel bicycles available for tourists to rent, Hula Valley, Israel, November.

Tom Gilks / Bicycle taxis with passengers carrying people, Kisumu, Kenya, February 2013.

Pete Oxford / Local woman and girl on bicycle, Mbomo Village, Odzala-Kokoua National Park, Republic of Congo (Congo-Brazzaville), Africa, May 2013.

Pete Oxford / Young girl on back of bicycle, Mbomo Village, Odzala-Kokoua National Park, Republic of Congo (Congo-Brazzaville), Africa, May 2013.

David Noton / Children cycling to school, near Vang Vieng, Laos, March 2009.

David Noton / Children riding bikes along riverside path at dawn, near Vang Vieng, Laos, March 2009.

David Noton / Cyclists riding bikes with tractor along riverside path at dawn, near Vang Vieng, Laos, March 2009.

Wild Wonders of Europe / Zankl / Bicycles and luggage outside hotel in Stolpe, Peene river, Germany, August 2014.

Wild Wonders of Europe / Zankl / Bicycles and luggage outside hotel in Stolpe, Peene river, Germany, August 2014.

Steve O. Taylor (GHF) / Early morning view of cyclist on empty street, N'Djamena, Chad, 2002-2003.

Steve O. Taylor (GHF) / Man riding bike along dirt road in village, Katanga, Democratic Republic of the Congo, March 2012.

Steve O. Taylor (GHF) / Mongo porters moving bicycles loaded with goods off canoe, Democratic Republic of the Congo, Africa, November 2011.

Steve O. Taylor (GHF) / Mongo porters moving bicycles loaded with goods off canoe, Democratic Republic of the Congo, Africa, November 2011.