SocSoc campaigns in this era, at their height, galvanised the support of at least 10% of Hull University's student population (then 1700), and wherever possible members sought to build a broad coalition of supporters, of all shades of opinion. In 1962, SocSoc members led a march to the Hull City Hall calling for peace in the midst of the Cuban Missile Crisis. Some 200 other students, including Conservatives and devout Christians, joined them in the march, which achieved local newspaper coverage. In 1963, a small number of SocSoc members, amongst some others, were - at the clandestine instigation of John Saville - also involved in what was dubbed the "Battle of Lister Street" by students. Lister Street, owned by private sector landlords, was the site of some of Hull's worst slum housing, and in protest at the conditions in 1963, tenants had refused to pay the rents. Facing eviction from private landlords, some Hull students decided to support the tenants in resisting eviction. The campaign carried a front-page headline in the Hull Daily Mail titled "Barricade in Lister Street", and thus succeeded in its aim of drawing attention to the poor conditions of slum housing in Hull, which was often ignored by members of the Hull City Council. Although otherwise insignificant in Student Union affairs relative to the Hattersley/McNamara era, SocSoc did campaign to get the University Union to boycott South African products. When the Union refused to endorse SocSoc's motion for the boycott, they proceeded to put up a slate of a dozen candidates for the Union elections. Most of them got elected and the ban was implemented. In addition, they assisted the local Labour party, and David Whitely in the then rather influential Hull and East Riding Cooperative Society, to impose a ban. They also campaigned against the then Blackburn (now BAE) factory at Brough's manufacturing of Buccaneer bombers for sale to Apartheid South Africa. In 1964, when Harold Wilson was returned as Labour Prime Minister, he proceeded to stop all arms sales to South Africa.