Cathays railway works the Cardiff Valleys Division, under the Loans and Guarantees Act (1929): the track layout was improved; a new corrugated roof installed; and a new ramp added to the GWR standard-pattern single-road coaling stage. By 1950 under British Railways, the combined depots of Cathays and Radyr (Code:88A), had a complement of 82 locomotives, all tank-types: 2x2-8-2T; 62x0-6-2T; 15x0-6-0T; 3x0-4-2T. In 1959 the shed was divided to cope with the introduction of diesel multiple units. In 1961 the shed closed to steam, and all steam locomotives were moved to Radyr. The shed closed completely in November 1964, with the opening of the
Fairwater, Torfaen use of cars had to be accommodated in the layout of further housing estates, and Redfern adopted the Radburn system, used most rigidly in Fairwater (built between 1963 and 1966). The remains of Llanderfel Chapel, a medieval chapel important as a stopping point on a pilgrims' route to Penrhys, are in Fairwater. The pilgrim route is now part of the modern long distance Cistercian Way footpath. The remains are a scheduled monument. Near the site of the chapel is Llanderfel Farm, a 16th-17th century Grade II listed building. Also nearby is Ty'r Ywen Farmhouse and barn which are both 17th