Stott's work on the Hammersmith flyover brought him to the attention of the London County Council where he was appointed deputy chief engineer.

He subsequently became chief engineer and was appointed Director of Highways and Transportation upon the creation of the Greater London Council.

Stott's eight years as director saw the construction of London's first motorways and the extension of computerised control to two thirds of the city's signalised junctions.

[2] In 1978 Stott was appointed a Commander of the Order of the British Empire in the Queen's Birthday Honours of 3 June.

[2] Stott was commissioned by the British government to write a report into the use of open (unguarded) level crossings on the British Rail network following the Lockington rail crash in which a passenger train collided with a van on a level crossing resulting in the deaths of nine people.

[4][5][6] Stott's report was published in August 1987 and led to a significant change in British Rail policy and the installation of barriers or reduction of train speeds at 75 locations.