Britain’s most dangerous road junctions have been identified in a new analysis that shows the accident blackspots where cyclists are being injured every few weeks.

Interactive maps show the junctions in London, Cambridge and rural Devon that had the largest number of crashes last year.

The worst area was a junction close to the site of the London Olympics in east London where cycling was given a huge boost by the achievements of Sir Chris Hoy, Victoria Pendleton and Laura Trott in 2012. Eight cyclists were injured close to the junction of Stratford High Street and Warton Road, east London, with another two recorded only yards away.

These occurred despite the fact that a clearly marked blue cycle lane has already been installed by Transport for London along the main road into the centre of the city as part of the “cycle superhighway” programme introduced by Boris Johnson, the mayor of London.

Cycling groups pointed out that a raised kerb used to segregate cyclists from traffic stopped at the junction — leaving riders at the mercy of turning vehicles.

The interactive maps, produced by Esri UK and The Times digital team, are published today as part of the Cities Fit for Cycling campaign. They show that 75 per cent of all cycling injuries recorded last year happened within 30 metres of a junction or roundabout.

The analysis follows the publication of statistics from the Department for Transport showing that 21,287 cyclists were injured on Britain’s roads last year. It was up by 9.5 per cent in 12 months and represented the highest number of cycling casualties since 1999. A total of 113 people were killed.

Cyclists are the only road users for whom injury rates have risen since the mid-2000s, partly on account of a big increase in the number of people taking to their bikes. Ministers are spending £318 million to boost cycling infrastructure, including more designated cycle lanes and safety lessons for schoolchildren.

Roger Geffen, campaigns and policy director at CTC, the national cycling charity, insisted that it was wrong to restrict improvements to those junctions with recorded accidents.

“These maps highlight the crying need to give cyclists greater safety and priority, particularly at junctions,” he said. “However, junctions with large numbers of cycling injuries aren’t the most ‘dangerous’, they may simply be well used by cyclists. Equally, a lethal edge-of-town junction with a motorway might have no cycling injuries because nobody dreams of cycling there. Still, both types will need safety improvements if cycling is to become a safe activity for everyone.”

The analysis shows that six of the top eight junctions with the highest accident rates were in London — in Deptford, Clapham, Peckham, Shoreditch and Stepney Green.

The roundabout between Trumpington Street and Lensfield Road in Cambridge was the second worst blackspot with seven accidents last year. The only rural blackspot was on the A3072 near Beaworthy in Devon where cyclists were injured in six accidents last year.