14th April 2020 GWR carried out a sleeper set swap for maintenance rotation on the 14th of April 2020. With the GWR sleeper services having been out of operation due to the UK COVID19 lockdown the opportunity was taken to switch the sets and provide some much-needed work for their Class 57s which have been stood idle. No. 57604 'Pendennis Castle' passes Allerford operating 5Z79 09:15 Reading Depot - Penzance with Mk3 sleeper coaches: 17173 12161 10594 10563 10589 and 10590 in tow. (Photo: Adam Snow)