Protected Characteristics - (adjective + noun)
It is against the law to discriminate against someone based on a protected characteristic. These protected characteristics include age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, and sexual orientation.
Source: Adapted from equalityhumanrights.com
Example of Use: If you believe you are being discriminated against because of a protected characteristic, then you should get some legal advice.