FSU grew out of Pacifist Service Units formed in 1940, initially conscientious objectors who wished to engage in socially useful work. By 1942 there were 14 units staffed by 82 men and women based in London and other cities across the UK. FSU formally came together in 1948 with the primary aim of helping families in difficulty in the aftermath of the war, particularly those affected by evacuation. Its concern was to promote the welfare of families and communities and the agency is identified with a specific method of working focused on 'casework' with individuals and families. The FSU was absorbed by the charity Family Action in 2006.
2nd tranche deposited Feb 2011. 3rd tranche deposited July 2011.