730010, 12.33 London Euston-Bletchley (via Northampton) (5Q86, 30E), site of Roade station
I could find nothing about this Sunday morning run from Euston to Bletchley via reversal in Northampton's Riverside sidings. 730010 is seen passing through Roade on its final leg to Bletchley running as 5Q86. It was probably a driver training run of some kind rather than mileage accumulation or testing as this unit was the one that operated London Northwestern's first Class 730 service at the start of the week, see... https://www.railadvent.co.uk/2023/11/new-class-730-trains-enter-service-with-london-northwestern-railway.html