If you have a Fold3 subscription, you now have convenient access to search the 1,349,366 records in the Second World War era London Gazette military notices.
These record military awards or commendations, reports of people leaving service due to illness, appointments, promotions, and other military matters. Information may include:
• Regimental number
• Military dates of service
• Commendation dates
The records are freely avaiable at the Second World War section of the London Gazette at https://www.thegazette.co.uk/all-notices/notice?sort-by=latest-date&end-publish-date=1945-09-02&start-publish-date=1939-09-01
Searching on Fold3 may reveal mentions of the person in other sources.