Question to the Home Office:
To ask the Secretary of State for the Home Department, what estimate his Department has made of the number of leave to remain applications that have exceeded the six months deadline.
The information you have requested is not included in statistics published by the Home Office.
However, published information on the number of applications for leave to remain in all categories, as well as data on UK Visa and Immigration performance against service standards for applications made in the UK and from overseas, can be found here:
https://www.gov.uk/government/collections/migration-transparency-data#uk-visas-and-immigration