My wife and I travelled to Norwich aboard GA's 755410 that is seen here at Cromer station with the driver walking along the length of the train to join the now leading cab in a very similar scene to one taken a few years previously, see....
https://www.ontheupfast.com/p/21936chg/30021249668/x2-t-170270-le-09-46-sheringham-norwich. We travelled on the Stadler train as the 09.44 Sheringham to Norwich and, as I commented last year when we did the same thing, the train was excellent with even Mrs. On The Up Fast commenting positively on the journey; praise indeed!