Collier, pictured with his five-month-old son William, was born into a left wing, and Quaker, family.  He was a pacifist, and conscientious objector in World War I.  After the Armistice he moved his family to Marazion due to his ill health and he became friendly with Father Bernard Walke (June 25^th) and his artist wife Annie Walke (July 6^th). 

He continued his WEA activities running classes in both Penzance and Redruth and published ‘Economic Justice: A textbook of Political Economy from a Christian Point of View’ (1924).  With chronic unemployment in post-war Cornwall, Collier created an organisation, Servants of the Church, with Walke and his fellow Quaker, Ernest Procter (October 21^st) to alleviate the unemployment and its consequences and devised a plan to re-open a tin mine in Scorrier.  This plan was well advanced and appeared feasible but was abandoned when the government announced road-building initiatives with the same intent. 

In the 1920s, Collier’s health deteriorated further and he died of tuberculosis at the age of 44.