33064 & 33102 pass Shrivenham on 4 August 1991 with the Network SouthEast 1Z33 09:00 Waterloo to Gloucester 'Network Explorer II' railtour, run in connection with the Gloucester Rail Day. Although this was running virtually to time, due to the locos being borrowed for one of Pathfinder Tour's mini excursions during the day, the return train left Gloucester over an hour late.