I wanna know about UK family visa

You and any family members applying for a family visa must provide the following:
Passport (applicants from abroad will need to have a blank page in their passport for their UK visa to be affixed to).
Scanned photos of visas, entry stamps and photo pages in old passports.
A scanned copy of the biometric residence permit (if available).
Tuberculosis test results (which may be required depending on the country you are applying from).
Visa applicants must provide the following data if it is not included in the above documents:
Biographical information (names, dates of birth, etc.).
National Insurance number (if any).
Nationality and date of birth of the mother and father (for those applying from abroad).
Criminal record (if any).
Information about any previous application you have made seeking to immigrate to the UK.
Relatives and acquaintances in the country in which she was born and in other foreign countries of which she is a citizen.
Any foreign countries you have traveled to and resided in previously.
Applicants who have spouses must submit the following documents and data of their spouse:
passport.
CV (name, date of birth, nationality).
The right to be in the UK (eg your wife is a British citizen).
Information about any ex-husbands of the wife or husband whose relationship resulted in children.
For couples who have previously been married to another person (divorce certificate or other evidence of termination of marriage).
People whom the wife or husband helps financially (if any).
Applicants applying for a family visa as spouses or partners should be prepared to provide information (proof of relationship) which includes the following:
Basic information about your relationship with the person you want to join in Britain, how your relationship started, how often you meet, etc.
The dates you stayed together (for which you will need to provide proof).
Joint purchases and joint financial accounts.
Whether you are your partner's caretaker.
The following information is required for children of applicants, applicants with children and children of spouses.
Biographical information (name, date of birth, nationality, etc.).
Passport data.
The person with whom the child usually lives.
People with parental responsibilities for your (or your partner's) child.
How close are you to the child (how often you see him, the nature of your relationship, etc.).
Visitation rights or the degree of court-ordered custody you have over the child (for parents who share child custody).
child's relatives.
Foreign countries where your child has resided or traveled to