Question to the Home Office:

To ask the Secretary of State for the Home Department, how many and what proportion of in-country visa extension applications have been decided (a) within (i) eight, (ii) 12 and (iii) 16 weeks and (b) after 16 weeks in each of the last three years.

The majority (99%) of straightforward cases are processed within service standards, based on the latest migration transparency data at:

https://www.gov.uk/government/publications/in-country-migration-data-august-2018