To gain permission to enter the UK through the fiancé visa you will need to satisfy the following requirements.
1. Have a sponsor as referred to above
2. Both parties to the relationship must be aged 18 or over at the date of application and not be within the prohibited degree of relationship.
3. You and your partner must have met in person.
4. You must intend to marry or enter a civil partnership within the duration of the visa (6 months). You should note that the 6 months will run from the date the visa is issued, not the date of entry to the UK.
5. You must intend to live permanently with the other as his or her spouse or civil partner following the marriage or civil partnership.
6. Any previous relationship of the applicant or their partner must have broken down permanently.
7. The applicant must meet a specific financial requirement (read more below).
8. The couple must be able to accommodate themselves and any dependants adequately without additional recourse to public funds both before and after the ceremony.
9. The applicant must demonstrate a minimum competence in the English language. This is met through being a citizen of a specified country, holding a degree level qualification that was taught in English, or by passing an approved English language test to level A1. To extend a spouse visa applicant's must demonstrate English language at level A2, and B1 for indefinite leave to remain.