(15 Apr 2021, 10:35 am)Ianthegoon wrote "Specialist" is being applied to some of the Trident / ALX400s in Bristol intended for school and closed contract work. Think 18420 has already been done, with 18421 and 18422 to follow.
Edited to add: Just seen a photo of 18422 in "Specialist" livery, so that's definitely been done!
And edited again (well, replied to and quoted, actually!) to confirm that I've now seen photos of both 18420 and 18421 in the Specialist livery as well.
So, if you wish to experience the Specialist livery, you'll want to get yourself down to Bristol and seek out ALX400s 18420, 18421 and 18422. They seem to work standard services fairly regularly as well, if you want to ride them!