The withdrawal of the D Stock on the District Line has started. They have served the District Line since their introduction back 1978-1980 and are now one of the oldest rolling stock in operation on the London Underground.
The refurbishment included many important features:
Applying London Underground livery with anti-vandal paint and window film
Restyling the interiors in green and white
Replacing maple flooring with rubber
Adding end-of-car windows
Replacing hanging straps (bobbles on springs) with grab bars
Covering the door buttons
Adding dot matrix indicators showing the station and destination on the inside and exterior front and sides
Adding an audio passenger information system
Adding a dedicated disabled section
Fitting air conditioning to driver's cab
Withdrawal of D Stock Trains
D Stock trains are in six car formations and have driving cars at each end. They will be replaced with New S Stock trains from early 2015 with the last train being replaced in April 2017.