230001 5Q12 Moreton-In-Marsh to Honeybourne North Jn 

Nice shots. It seems like the trials are going well. I certainly hope so. The trains look good in the GWR livery. I wonder if Vivarail had stuck to batteries rather than diesel conversions that they may have had better financial success. The former 319s did not do very well after diesel conversion, either.

Nice that they are bringing the d stock back to London, he can meet his friends again

Nice video! When will these trains enter service with GWR and what routes will they work please?

Still sounds like a London U/G train.