The London street would be colourless and incomplete without the world-famous red buses. Less well known is the means by which standards of service are maintained, and this film shows the rationalised dismantling and re-integration of 44 buses each week at London Transport's Aldenham Works. One of the most up-to-date plants of its kind in the world. Alderham maintains by flow-process techniques the world's largest fleet of 7,500 buses.