Question to the Department for Transport:
To ask the Secretary of State for Transport, how many and what proportion of the UK's civil aviation fleet is (a) under 5 years old, (b) between 5 and 10 years old and (c) over 15 years old.
The Department for Transport does not routinely collect statistical data on the age of the UK civil aviation fleet. The Civil Aviation Authority (CAA) maintains a database (https://siteapps.caa.co.uk/g-info/) of all UK registered aircraft which can be individually queried to determine the year an aircraft was built.