 The trailers became 1316-1335 and the control trailers 2043-2062 in 1930, and in 1934, following the formation of London Transport and the introduction of a standard numbering scheme, the trailers became 7230-7249, while the control trailers were given the numbers 5170-5189.The cars were considered to be drab, when compared with new stock being delivered to the Hampstead Line around 1930, and they were refurbished.As built the cars had longitudinal seating through the length of the car, providing seats for 44 passengers.