You can accept that the “domestic partner” is entitled to a share of the estate or alimony, as is the case for divorce or the dissolution of a life partnership. Under UK law, couples who live together do not have the same legal rights as married couples or couples in a life partnership. A concubine agreement can offer legal protection to cohabiting couples, which allows them to legally define and protect their share of the property if they decide to end the relationship. A concubine agreement is a document that can be enforced by the court if properly executed, provided that you have both been honest about your finances and have each received separate legal advice on its terms. It depends on the complexity of your living conditions and the number of details you want to include in your concubine contract. We will advise the costs as soon as we know the nature and extent of your planned arrangements, but as a guide, the cost will be approximately between £650 – 1500 plus VAT, depending on the complexity of the agreement. Unwarried partners are not entitled to their partner`s pension in the event of cohabitation or separation, except in very exceptional cases. However, it is possible for a party to designate a roommate as a recipient of a death benefit. It is almost certain that informal cohabitation will not be legally applicable. Some aspects may also need to be supported by legal documents: for example, to ensure that your partner inherits in the event of death. However, there would be no automatic legal finding of the existence of a de facto marriage. Instead, the statute would still be a matter of judicial finding and even the “presumption” mentioned above would be rebuttable in court by clear and convincing evidence. .