Being in a ‘Common Law’ partnership has been around for the age of time, however legally, couples who identify under a common law marriage do not have the same rights as married couples when it comes to boring things like Tax, Pensions & Inheritance.
Since the 31st of December 2019 Civil Partnerships for opposite sex couples and genders have been legal in the United Kingdom. It was made lawful for same sex couples to have a civil partnership in 2004, and eventually in 2014 same sex couples were legally allowed to marry. (Madness really isn’t it? But hey, positive change is always good, so let’s keep it going).