The Vietnam Solidarity Campaign (VSC) was originally set up in 1966 by activists around the International Group with the personal and financial support of Bertrand Russell.

Marxist activists including Tariq Ali, Ernie Tate, Al Richardson, David Horowitz, John La Rose and Pat Jordan also played a key role.

It organised a demonstration of 20,000 people in October 1967 that for the first time ignored police warnings not to enter Grosvenor Square, where the United States Embassy in London was then located.

Every issue of the Vietnam Solidarity Campaign Bulletin contained a special section on "British Complicity" in the war, usually focusing on military R&D carried on by industry and universities.

[1] The campaign also picketed firms which were known to supply the US military including the Dow Chemical Company's UK operations[2] and the Elliot Automation factory in Lewisham.