Hi, thanks for the response. It sounds as if you have gone onto a sponsorship, rather then a Family Visa. A family Visa can only run for a maximum of 6 months before expiring, and needs to be extended if needed for more then 1 month. It is not to live here, and does not need a medical. So the question is, can someone arrive on a 4 week visit visa, and while they are here apply and move over to a family visa.