Dear Sir/ Madam, My parents in law have 2 year visitor visa (both are retired). There is no specific maximum period that an individual can spend in the UK in any period such as '6 months in 12 months'. (source 'visit guidance' Https://www.gov.uk/government/uploads/system/uploads/attachment_data/file...

My parents in law have a 2 year visitor visa (both are retired). There is no specific maximum period that an individual can spend in the UK in any period such as '6 months in 12 months'. Https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/619130/Visit-guidance-v6.pdf What is th...