The documents required for a UK family visa are as follows:
- Passport
- A valid travel ID
- Proof of relationship (Birth certificate of shared children or marriage certificate)
- Proof of funds worth more than £16,000 and sufficient for a minimum of 28 days
- Proof of English language proficiency (SELT certificate at CEFR Level A1)
- A TB test certificate (if required, based on the country you are applying to)
- Proof of accommodation in the UK