London Transport Executive

A great deal of the early work of the LTE was spent repairing and replacing stock and stations damaged during World War II.

LTE also oversaw the completion of the delayed Central line expansion, which had been part of the 1935–40 New Works Programme begun by the LPTB.

The main priority of the BTC was to modernise its main-line railways and many of the uncompleted projects which were part of the New Works programme were postponed or shelved.

However, this latter scheme (the Northern Heights) was never completed, as the protection of the countryside, under the newly created Green Belt plan, stopped residential building in this area and reduced passenger numbers would not justify the expenditure.

Electrification to West Ruislip was completed in 1948, leading to the start of passenger trains, which did not require locomotive changes, on 21 November of that year.

This consisted of electrification from Rickmansworth to Amersham and Chesham, some station reconstruction and quadruplication, and replacement of the rolling stock.