In December 2022, the ORR approved Grand Union to commence a new service from Paddington to Carmarthen in partnership with Spanish rail operator Renfe, for which a fleet of new bi-mode trains will be used. The new service is scheduled to commence in December 2024. The service will call at Bristol Parkway, Severn Tunnel Junction, Newport, Cardiff Central, Gowerton and Llanelli en-route to Carmarthen.ORR approves Grand Union London - Carmarthern trains Rail issue 972 14 December 2022 page 17
