37055 approaches Althorne (near Burnham-on-Crouch) on 22 July 1993 with the 7L72 09:46 Willesden to Southminster nuclear flask. This train served Bradwell Power Station, which was an operational nuclear plant between 1962 and 2002. This train only ran on Thursdays, and such was the intensity of service on the branch (or more to the point, the limited capacity caused by the long sections of single track), that one of the daily passengers trains was cancelled on a Thursday to accommodate it!