Plans to overhaul the overcrowded tube station in Camden Town could get underway within three years.
Some 97pc of 600 respondents to a consultation were in favour of proposals to treble the size of the station.
Built in 1907 it is now used by 30 million customers a year.
The upgrade would include a new entrance in Buck Street, and the installation of three escalators and lifts for step-free access.
There would also be more space for customers using its four Northern line platforms. Crowd control measures - including making the station exit only - are regularly used to ease congestion and to ensure safety.
TfL will consult later in the year on how the new entrance might be built and how to manage the impact of construction, ahead of an application for permission to start work.
If granted, work could begin in 2021, and be completed within five years.
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