Last update 5 July 2021
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So far (2021), only two codes are known. Separate Wales codes are not expected to come into full use for some time yet. Those that do exist seemed initially to be used interchangeably with the former codes before being quietly withdrawn from use.
|Code||Line Name||Route Availability (RA)|
|CY240||Gloucester Barnwood Junction to Severn Tunnel Junction Replaced GW700 from 2016; existence of this code not confirmed||8 Caerwent branch RA4|
|CY1540||Whitland to Pembroke Dock Replaced GW950 from 2012||7 Pembroke - Pembroke Dock RA6|