Source http://www.enei.org.uk

A person who is married or in a civil partnership is protected under The Equality Act 2010.

Marriage covers any formal union of a man and a woman which is legally recognised in the UK as a marriage. A civil partnership is a registered civil partnership under the Civil Partnership Act 2004 and may include a partnership registered outside the UK.

Protection under the Act extends only to those who are married or in a civil partnership; those who are unmarried or single are not protected, nor are those who intend to marry or form a civil partnership. Similarly, those who have divorced or who have had their civil partnership dissolved are not protected.