The 197s do also run quite a few services in south Wales, just not on the Penarth branch.
Although my forum username is a Welsh word, I'm no expert on the language. Thus, the issue I have is indeed the inclusion of the word 'Express' on 197049's (probably vinyl) nameplates (the full name applied to the unit is "Castell Caeriw Cyflym/Carew Castle Express",
which I think makes it the longest name of any 197 because the other three-word names (the Wrexham FC pair) are not fully bilingual). As I keep saying, 'Carew Castle' (with Welsh translation) would be fine. However (to me at least) the longer name is wrong on at least 3 levels:
- TfW have used the name on a 'nameplate' rather than a 'headboard' for a named service (such a shame that the ATW 'Y Gerallt Gymro' headboard for the Holyhead-Cardiff premier service got lost/stolen)
- 'Express' (at least in the context of bus and rail services) generally implies a service with fewer intermediate stops (or none at all) - I think the nearest station to Carew is Lamphey, which is a minor intermediate station (not likely to be a call on an express service - indeed the present day GWR 'Pembroke Coast Express' doesn't call there) (I also object when the word 'direct' is used to mean a 'through service' via a rather indirect route)
- The class 197s are a rather 'run-of-the-mill' design, which TfW have argued is designed to minimise dwell times and accelerate quickly away from each stop, in order to improve punctuality "on services with frequent stops in major cities" - that sounds like they are describing a metro service rather than an express. (I believe the "Dublin Swift" is both a 'fast ferry' (catamaran) (rather than a traditional (larger and slower) ferry) and a branding for the service it operates - that name is therefore appropriate in that context).