The London Underground Circle Stock consisted of 90 cars renovated in 1934 at Acton Works, selected by the LPTB from earlier Metropolitan Railway stock - 59 of which dated from 1921 but 4 were 1905 clerestory roofed cars. The vehicles were externally repainted in a red-and-cream livery at first; later all-red. They were finally withdrawn on 31 December 1950, being replaced by 5-car trains of P Stock, which had previously been used on the Uxbridge branch of the Metropolitan Line. Disposals started in Oct 1950.