What was 352T at Effingham Junction Friday 24 January?

[30909]

https://www.realtimetrains.co.uk/train/83136/2020-01-24/detailed
Left Tyseley Steam Trust at 01:41 via Oxford, Basingstoke, Eastleigh, Havant, Guildford arrived 07:20
Interested to know what this was?

 

[Deepgreen]

Departmental unit - possibly hired for surveying by Tyseley S.T. or just using it as a turn-back location for NR work?

 

[trainmania100]

MPV probably as it's a Balfour Beatty train originating from Effingham Junction shortly before
https://live.rail-record.co.uk/train?c=82681&d=23/01/2020
Guess they're having attention up at tyseley following the busy rhtt season

 

[30909]

Thank you both, had not looked back to see the "up" journey, but expected as much. I just had a fantasy moment that it might have been a preserved loco then I would have been inundated with replies!