Some websites state that a visitor on C Type multiple entry visa can only stay in the UK for up to 180 days per year. However, this is an incorrect interpretation of the Immigration Rules. Indeed, the Immigration Rules clearly enables a visitor to cumulatively stay for more than 180 days per year. However, a person on Multiple Entry Type-C Visitor Visa is not allowed to live in the UK for extended periods through frequent or successive visits or make the UK their main home.
Accordingly, a genuine visitor can stay for more than 180 days per year. However, there must be a compelling genuine reason to do so. For instance, childcare of an ailing relative. Accordingly, such a visitor can stay up to 180 days per visit and can repeat this throughout the validity of the visa. However, if the reason is not genuine then the leave to enter or remain can be curtailed and visitor can be removed or deported. Moreover, any subsequent application could be refused solely for extended stays and making the UK home.