The legal landscape is currently set by the Equality Act 2010 (2010, c.20)
Subscription databases are usually the best means to find the current consolidated state of legislation. The print alternative is Halsbury's Statutes KZ2 - remember to use the updating services not just the main volumes.
Two specialist series which you may not have encountered before are:
|EqLR||Equality law reports||Cw UK 120 E78|
|IRLR||Industrial relations law reports||Cw UK 120 I62|
These series are digested by Rubenstein's Discrimation: a guide to the relevant case law The most recent edition held by the LawBod can be found at Cw UK 120 I62.1 (Check the last paragraph of the Introduction for the cut off date).
Specialist series you may not have encountered before:
|EOR||Equal Opportunities Review||Cw UK 300 E50|
|IJDL||International Journal of Discrimination and the Law||General 300 I124.55|
Textbooks and commentaries
Discrimination and worker's rights will, of course, usually be a chapter (or two) in general works on employment law shelved from KN190.
Warning! The looseleaf service Discrimination law shelved at KN191.2 may not be uptodate: check the front pages of the first binder to see when last filed and to see if it is missing any services.
Works approaching the topic from the discrimination/equality as a right are shelved at KM208.
Works on the philosophical basis may be in the wing, with a shelf mark beginning Jurisp.