The information requested is not held centrally.
The Department for Transport publishes the number of drivers of different age groups involved in reported personal injury road accidents in table 38a of the publication "Road Casualties Great Britain - annual report 2007". Fault is not assigned to participants in these collisions. However, information on the contributory factors is collected and published in article 4 of the same report. Table 4h of this article provides the most frequently recorded contributory factors for car drivers by age group.
Copies of the report have been deposited in the Libraries of the House. The report is also published on the Department for Transport web site at the following link: