[5] The NAMT changed its name in 1920 to the National Association of Schoolmasters (NAS) and seceded finally from the NUT in 1922.

The NUT first established its offices at 7 Adam Street, Adelphi, London WC on the appointment of the first full-time Secretary in 1873.

In 1915, it moved its headquarters to Hamilton House, Mabledon Place, London WC1H 9BD, where it has remained ever since,[6] except during the Second World War, when the NUT rented Toddington Manor, Gloucestershire in order to avoid air raids.

From 1989, the General Secretary was elected by the union's membership, with each term lasting five years.

Named after former General Secretary Fred Jarvis and his late wife, the Fred and Anne Jarvis Award was established in 2007 and was presented annually by the NUT to individuals other than NUT members who campaigned tirelessly for all children and young people.