19th Dec: Oliver Cromwell hauled today's Cathex 1Z82 from London Victoria to Bath Spa turned up at around 11:55 at Norn Hill but she was asked to stop and wait by the signal to join the South Western Main Line. To my surprise was that the following GWR service train from Reading to Basingstoke 2J29 by class 166 #166212 seemed to obtain the permission to take over 1Z82 by running on the Up line! I did not know such thing can happen.