The concept of “caste” is complex, although is generally understood to refer to hereditary, endogamous (marrying within the group) communities differentiated according to different functions of life, such as occupation. The concept is associated with South Asia, particularly India and its diaspora.
Caste discrimination is not expressly prohibited under UK equality legislation, although section 9 of the Equality Act 2010, as amended, currently requires the Government to introduce secondary legislation to make caste an aspect of race, thereby making caste discrimination a form of race discrimination. The Coalition Government initially indicated that this legislation would be introduced to Parliament during summer 2015.
The Conservative Government reviewed its position on the need to introduce legislation, following the Employment Appeal Tribunal’s decision in Chandhok & Anor v Tirkey  UKEAT 0190_14_1912. In that case the Employment Appeal Tribunal noted that caste discrimination is capable of being unlawful under current law, provided that the circumstances of the case fall within the existing prohibition of race discrimination.
On 2 September 2016 the Government announced that it would conduct a public consultation on the issue. The consultation was published on 28 March 2017 and ran until 18 September 2017. The Government published its response on 23 July 2018, concluding against further legislation, preferring to rely on developments in case law. The Government has therefore committed to repealing the duty, under the amended section 9 of the Equality Act, to legislate to prohibit caste discrimination.