 The women were only regraded into Category C following a further six-week strike in 1984.Inspired by the example of the machinists, women trades unionists founded the National Joint Action Campaign Committee for Women's Equal Rights (NJACCWER), which held an "equal pay demonstration" attended by 1,000 people in Trafalgar Square on 18 May 1969.The movement ultimately resulted in the passing of the Equal Pay Act 1970, which came into force in 1975 and which did, for the first time, aim to prohibit inequality of treatment between men and women in Britain in terms of pay and conditions of employment.