When the London Passenger Transport Board took over from the District Railway in 1933, 173 motor cars were less than fifteen years old although most of the trailer cars were of the original 'B Stock' wooden type built in 1904–05.
In 1933, when the London Passenger Transport Board succeeded the District Railway, there were 173 motor cars that were less than fifteen years old. Most trailer cars, which were of the original 'B Stock' wooden type built from 1904 to 1905, were still in use.