37612 passes through Finstock station on 25 January 2023 with the 1Z22 07:52 Derby RTC to Bristol Kingsland Road Network Rail test train, with 37610 bringing up the rear. This was running 22 minutes late, and had been held at Charlbury to allow the 1W21 10:50 Paddington to Worcester Shrub Hill GWR service to clear the long single track section from Wolvercote Junction.