If you are coming to the UK for more than 6 months to live with a family member, you can apply for a family visa if you are planning to come and live with your:
Requirements of a spouse visa:
Fiancé, fiancée or proposed civil partner
As a fiancé, fiancée or proposed civil partner you must show that you are free to marry (any previous marriages or civil partnerships have ended) and that you plan to marry or become civil partners within 6 months of arriving in the UK.
Adult dependant relative
If you are an adult coming to the UK to be cared by a relative and you are in need of long-term care from a parent, grandchild, brother, sister, son or daughter who is living permanently in the UK you may qualify to come under a family visa.
The relative in the UK must:
Applicants for Adult Dependant Relative visas must show that they are over 18 years old and that:
Duration of stay
How long you can stay will depend on the status of your family member. If your relative is British, Irish or settled in the UK you may be grated Indefinite Leave to Remain.