Ruston & Hornsby Works No. 262997 was supplied new to the West Midlands Joint Electricity Authority in January 1949 for its Birchills Power Station in Walsall. From September the same year, it moved to the newly-opened Walsall ‘B’ Power Station and, even after nationalisation of the industry in 1948 as the CEGB, continued to carry its WMJEA.
