The Fiance Visa route allows engaged partners of British citizens, as well as those with indefinite leave to remain or established status under Appendix EU, to enter the UK with limited leave to remain and register their marriage within six months of arrival. The UK Fiance Visa Requirements state that applicants must have funds of at least £62,500 or gross yearly earnings of at least £18,600 if neither they nor their sponsor can demonstrate income from employment or self-employment. For more info. visit https://legafit.com/fiance-visa-uk/
