|Number built:||279 cars (6-car sets)|
|Engine:||4 Brush LT117 traction motors per motor car (630v DC fourth rail)|
|Formation:||Driving Motor (DM)+Trailer(T)+DM+T+T+DM|
The C69 Stock was designed with Automatic Train Operation (ATO) in mind though this was never fitted . They were later converted to One Man Operation (OMO) in the early 1980s and were the first LU stock to do so and do away with guards. When built the C Stock had longitudinal and transverse seating though the later was removed during refurbishment in the early 1990s  in common with other LU stock. Windows were also added to the non-driving ends of cars during refurbishment.
After over 40 years service C Stock was replaced by S Stock in 2014. Three cars of C77 Stock have survived scrapping including 5721 at the London Transport Museum and the other 2 at educational establishments.
|Car 5606 at Earls Court|
|Interior of preserved DM 5721|
|Non-driving end of 5721 showing the windows added during refurbishment|
|Cab of 5721|
 John Glover, London Underground (Ian Allan, 1997) p. 56
 John Glover, London Underground Rolling Stock in Colour (Ian Allan, 2009) p. 5
 Piers Connor, The London Underground Electric Train (Crowood, 2015) p. 160
 John Scott Morgan, London Underground in Colour since 1955 (Ian Allan, 2003) p. 17