A concrete wall was built at the Grosvenor Road End for over £3,000 in 1956, as a safety precaution and as a support for additional banking and terracing. These improvements saw capacity extended to 23,600. Two FA Cup ties against First Division opposition were held at the ground in 1957–58: Birmingham City were beaten 3–0, followed by a 0–0 draw with Bolton Wanderers, which drew a capacity crowd of 23,600. Floodlights were installed at the ground in the summer of 1959, costing £14,500, a substantial part of which was raised by a supporters' club. They were officially switched on for a friendly against Newcastle United on 28 October 1959, which Newcastle won 8–2 before a crowd of 9,414.