Network Rail has said it is unlikely it will support FirstGroup’s plan to introduce Lumo trains between London Paddington and Hereford. Network Rail has said it is unlikely it will support FirstGroup’s plan to introduce Lumo trains between London Paddington and Hereford. The plan for two open access services a day was announced in June and would run in conjunction with the Carmarthen service due to start in December 2027. For (Lumo) services to run during these periods other operators with existing rights would have to surrender paths.”NR also said platforming remains a “high-risk item” with existing constraints in place at Paddington. Six crossings identified by NR would need minor work before any timetable uplift, but that is currently unfunded.