All (Convention) rights and freedoms to be secured without discrimination on any ground such as sex, race, colour, language, religion, political or other opinion, national or social origin, association with a national minority, property, birth or other status.
This right operates via the other absolute and qualified rights.
It follows from the basic principle of equality before the law and since 1772 has been taken as applying to all on UK soil: ECHR jurisdiction.
For illustration here are the discrimination cases on this website, with the relevant rights.
H (Nigeria): By failing to recognise and compensate for H’s schizophrenia the Justice Secretary was found to have broken the Disability Discrimination Act (1995) which was a fore-runner of the approach to discrimination taken in the HR Act and the Equality Act. 5. Mental Health of Detainees
Terrorism Act 2000 discriminated against non-British international terrorists about 40 of whom were imprisoned in the immediate aftermath of 9/11: Belmarsh-case with respect to Articles 5 & 6. Belmarsh-UKHL-2004; Public-Law-re-Belmarsh
Transport for London illustrates the Supreme Court recognising the vulnerability of a weaker against a mainstream UK sector. 2. Transport for London