The UK Partner Visa, also known as the spouse visa, allows individuals to join their partner in the UK if they are a British citizen or settled person (holding ILR). This visa route is designed for married couples, civil partners, unmarried partners, and same-sex partners. Applicants must meet strict eligibility criteria, including proving the genuine nature of their relationship, meeting financial requirements, and demonstrating adequate accommodation. Successful applicants initially receive a temporary visa and can later apply for ILR, leading to permanent residency in the UK.