In the running shed were Merddin Emrys and David Lloyd George, the former recently being unveiled in a striking green livery in time for the 70th Anniversary year.
In the small engine shed were Sybil, Lilla and Mary Ann alongside K1 and Prince, the former also being unveiled in a heritage green livery, complete with wooden nameplates.
Outside the works, and it was like a gala.
Velinheli and Hugh Napier were in steam giving footplate rides, and Chaloner, a visiting vertical boiler loco from the Leighton Buzzard Railway, was also in steam running up and down the various lines.
Britomart was also in steam, posed outside the Top Shed with a slate waggon.
Due to the amended services, reservations are mandatory on trains running after 8 am towards Cardiff, regardless of the reason for travel, and trains will not stop at Bristol Parkway.
For Direct services to and from Cardiff, customers will need to travel to Bristol Temple Meads and not Bristol Parkway.