Equality Act 2010
It is against the law to discriminate against anyone because of:
If you are a member of the University of Oxford and have an Oxford single sign-on, subscription databases are the best source for legislation - especially if you are looking for the current/amended state of an act.
If you are dependent on free online resources, use legislation.gov.uk but take note of any warnings about status: it will be reliable source of the text as originally enacted NOT necessarily the current state of the act.
On Level 2, are two services which try to keep up to date amendments
Halsbury's Statutes Shelfmark: KZ 2
Multi-volume work arranged by broad subject area. Has statutes as amended and annotated with a looseleaf updating service.
Current Law Statutes annotated Shelfmark: KZ 5
From 1947 onwards. Arranged by year. Contains statutes as originally enacted with annotations.
If you just need the text of an act as it was originally promulgated, the the Law Bod's collection is on Level 1.