[en] Accidents and incidents involving the transport of radioactive materials are rare. However, there is always a potential for such an event, which could lead to a release of the contents of a package or an increase in radiation level caused by damaged shielding. These events could result in radiological consequences for transport workers and members of the public. The UK legislation on the transport of radioactive materials requires significant events to be reported to the competent authority. This allows for investigations to be carried out which may result in corrective actions to be implemented and wider lessons to be learned. The Department for Transport (DfT), together with the Health and Safety Executive (HSE) have supported, for almost twenty years, work to compile analyse and report on accidents and incidents that occur during the transport of radioactive materials. The details of these events are recorded in the Radioactive Materials Transport Event Database (RAMTED) maintained by NRPB on behalf of the DfT and HSE. Information on accidents and incidents date back to 1958. RAMTED currently includes information of 747 accidents and incidents, covering the period 1958 to 2001. Annual reports on these events have been produced for twelve years. Also, information on these events is provided annually to the IAEA's EVTRAM database, for wider circulation. This paper presents a summary of the reporting requirements in the UK. Also, summary data on accidents and incidents are presented, identifying trends and lessons learned together with a discussion of some examples. It was found that, historically, the most significant exposures were received as a result of accidents involving the transport of industrial radiography sources. However, the frequency and severity of these events has decreased considerably in the later years of this study due to improvements in training, awareness and equipment. (author)