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, Double Bay can continue to live-in at "Fairwater". "Fairwater" is set on facing Sydney Harbour and in 2017 had an estimated value of approximately 100 million. The retaining walls are of rubble construction with no mortar in the bedding joints. The stone is sandstone, probably local. The front (carriage) drive is surfaced in asphalt with brick edging. The brick edging is contemporary with the retaining walls. The grounds could not be considered particularly interesting examples of a formal garden style. It does however retain a large area, with extensive lawns towards the harbour and a number of mature and fine specimens of