of the passing of the Equal Pay Act 1970. As well, inspired by the 1968 strike, 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 Equal Pay Act 1970 is an Act of the United Kingdom Parliament from 1970 which prohibits any less favourable treatment between women and men in terms of pay and conditions of employment. The Act has now been mostly superseded by Part 5, chapter 3, of the Equality Act 2010. The Sex Discrimination Act 1975 (c. 65) was an Act of the Parliament of the United Kingdom which protected people from discrimination on the grounds of sex or marital status. The Act concerned employment, training, education, harassment, the provision of goods and services, and the disposal of premises. The Gender Recognition Act 2004 and The Sex Discrimination Act 1975 (Amendment) Regulations 2008 amended parts of this Act to apply to transsexual people. Other amendments were introduced by the Sex Discrimination Act 1986, the Employment Act 1989, the Equality Act 2006, and other legislation such as rulings by the European Court of Justice. The Act did not apply in Northern Ireland, however The Sex Discrimination Gender Reassignment Regulations (Northern Ireland) 1999 does. The Act was repealed in full by the Equality Act 2010. The United Kingdom signed the Convention on the Elimination of All Forms of Discrimination against Women in 1981 and ratified it in 1986. Female genital mutilation was outlawed in the UK by the Prohibition of Female Circumcision Act 1985, which made it an offence to perform FGM on children or adults. When Margaret Thatcher (who had been the first female Prime Minister of the United Kingdom from 1979 to 1990) died the then Leader of the Opposition, Ed Miliband paid tribute to her as "the first woman Prime Minister". However Thatcher received scant credit from feminists for breaking the ultimate glass ceiling, because she herself avoided feminism, and expressed an intensely masculine style. is a court judgment delivered in 1991, in which the House of Lords determined that under English criminal law it is possible for a husband to rape his wife. Education In a 2015 evaluation from Lord David Willetts he had discovered and stated that in 2013, the percentage of undergraduate students in the UK were 54 percent