To apply as a partner, you and your partner both need to be 18 or over.

Your partner must also either:

be a British or Irish citizen
have settled in the UK – for example, they have indefinite leave to remain, settled status or proof of permanent residence
be from the EU, Switzerland, Norway, Iceland or Liechtenstein and have pre-settled status – they must have started living in the UK before 1 January 2021
have a Turkish Businessperson visa or Turkish Worker visa
have protection status (leave to remain as a refugee, permission to stay as a refugee or a person with humanitarian protection)
You and your partner must intend to live together permanently in the UK after you apply.