The Department had originally included a figure of £200 million for the impact of a delay in opening the Link on the benefits of the Thameslink 2000 project. This was removed from the final assessment as there had been a two year delay in Thameslink 2000 anyway. However, the Department's April 1998 assessment stated that the delay to the Link was three years, so we have included an impact of £100 million on the Thameslink 2000 benefits as an estimate of the increased delay.