[6][7] The act protects people against discrimination, harassment or victimisation in employment, and as users of private and public services based on nine protected characteristics: age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, and sexual orientation.

Polly Toynbee wrote that the bill, which was drafted under the guidance of Harriet Harman, was "Labour's biggest idea for 11 years.

[13] [14] Sections 104–105 of the Act extend until 2030 the exemption from sex discrimination law, which allows political parties to create all-women shortlists.

The parliamentary process was completed, following a debate, shortly after 11 pm on 6 April 2010, when amendments by the House of Lords were accepted in full.

[16] In April 2008, Solicitor General Vera Baird announced that as part of the Single Equality Bill, legislation would be introduced to repeal parts of the Act of Settlement 1701 that prevent Roman Catholics or those who marry Roman Catholics from ascending to the throne, and to change the inheritance of the monarchy from cognatic primogeniture to absolute primogeniture, so that the first-born heir would inherit the throne regardless of gender or religion.

[17] However, later in 2008, the Attorney General Baroness Scotland of Asthal decided not to sponsor a change in the law of succession, saying, "To bring about changes to the law on succession would be a complex undertaking involving amendment or repeal of a number of items of related legislation, as well as requiring the consent of legislatures of member nations of the Commonwealth".

Although the act was never going to change the law with regard to churches from its existing position, nor change the binding European Union law which covers many more Roman Catholics than those living in the United Kingdom, and although the position had been spelled out in the High Court in R (Amicus) v Secretary of State for Trade and Industry,[19] a small number of Roman Catholic bishops in England and Wales made claims that they might in future be prosecuted under the Equality Act 2010 for refusing to allow women, married men, transgender people, and gay people into the priesthood.