Looks like 180 days per visit to me
HOW MANY DAYS A VISITOR USUALLY STAY IN THE UK ON A TYPE-C VISA?
[COLOR=rgba(0, 0, 0, 0.498039)]Certainly, a visitor can stay up to 180 per visit in the UK. And more than 180 per year if a visitor is making more than one trip in a year to the UK. However, most of the visitors have an active life in their home country. Therefore, usually, the stay is no longer than 2-3 weeks for business visitors and tourists. Perhaps, even most of the family visitors usually don’t stay longer than 1-2 months per year in the UK.[/COLOR]
FOR HOW MANY DAYS A VISITOR CAN STAY IN THE UK IN A YEAR?
[COLOR=rgba(0, 0, 0, 0.498039)]In light of the Immigration Rules, a genuine visitor can stay in the UK for more than 180 days in a year. However, there must be a compelling genuine reason to do so such childcare of an ailing relative.[/COLOR]
[COLOR=rgba(0, 0, 0, 0.498039)]For example, a visitor can stay in the UK for 175 days and then return to the Home Country and after 10-15 days can re-entry the UK and stay up to 180 days as allowed during the Rules. As per the Rules relating to the frequency of visits and duration of the visit under section 4 of Immigration (Leave to Enter and Remain) Order 2000, a holder of a 5 or a 10 ten year multiple entry visit visa can repeat this throughout the validity of the visa. However, there should be a genuine reason for living so many days per year in the UK as a visitor.[/COLOR]
[COLOR=rgba(0, 0, 0, 0.498039)]If the reason is not genuine then the leave to enter or remain can be curtailed and visitor can be removed or deported from the UK, the next application of visitor, even a family visitor such as parents, could be refused solely due to the reason of living in the UK for such an extended period of time i.e. rather temporarily visiting the UK to meet family, the visitor has made the UK his/her home, which is not allowed in the visitor rules.[/COLOR]