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
Cathays under the Freedom of Information Act show that over 70% of the houses in Cathays are now HMOs. The buy-to-let market has deterred young couples, families and first time buyers from setting up home in the area. Cathays High School is an 11-18 mixed comprehensive school that started as a boys Grammar school in 1903 and became a comprehensive high school in 1973. Despite the urbanisation of Cathays there is extensive parkland around the civic centre, including Gorsedd Gardens, Queen Alexandra Gardens, Bute Park and Blackweir. The area is served by Cathays railway station in the east of the area