In part, the severe winter months of January, February, November and December may have contributed to there being only a small increase in cycling overall, while motor vehicle traffic fell substantially.
CTC’s Campaigns Director, Roger Geffen, said: “Despite months of ice and snow in 2010, cycling is still growing. However, casualties remain high, and there are many areas where Britain is falling farther behind our European counterparts in providing for cycling We still have only a tiny fraction of our residential streets covered by 20mph while hostile roads, bad driving, and weak law enforcement remain serious barriers to getting more people cycling.”
Cycle use in 2010 was 5 billion kms, a little higher than 2009, taking it to its highest level for 20 years. The likelihood of being killed while cycling is 54% lower than it was in 1990.
Similar figures have also been published for the capital, where in 2010 cycling increased by 15%. Injuries in London rose by 9% but remain 18% lower than in the mid-1990s.
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CTC, the national cycling charity with 67,000 members, is the oldest and largest cycling body in the UK, established in 1878. CTC provides a comprehensive range of services, advice, events and protection for its members and works to promote cycling by raising public and political awareness of cycling's health, social and environmental benefits. Visit www.ctc.org.uk .
The risk of cycling is based on the number of road deaths (111 in 2010) per mile cycled (5 billion kms in 2010). Similar data for 1990-2010 (reproduced from Department for Transport data) can be found in the table below.
Road traffic data published today: http://www2.dft.gov.uk/pgr/statistics/datatablespublications/roads/traff... 
Road casualty data published today: http://www2.dft.gov.uk/pgr/statistics/datatablespublications/accidents/r... 
Cycle use grew just 0.5% in 2010 but remains higher than at any time since 1991. Motor traffic fell by 8.1 billion kms (-1.6%) and has been attributed to the severe winter weather at the start and end of 2010.
Transport for London’s casualty figures can be found here: www.lscp.org.uk/lrsu/www/downloads/publications/casualties_in_greater_lo... 
Latest data on cycle usage in London can be found on p. 16 of the Commissioner’s Report to the Transport for London Board meeting held this week: www.tfl.gov.uk/assets/downloads/corporate/Item04-Board-29-June-2011-Comm...