The child dependant visa uk allows non-British children to join a parent who is already in the UK. To qualify, the child must be under 18 and financially dependent on the parent. The sponsoring parent should have a valid visa, and the application process involves providing evidence of the relationship, financial support, and accommodation. This visa aims to keep families together and ensure the well-being of dependent children. It's an essential component of the UK's immigration policies, promoting family unity.