The squadron spirit remains a live in the legacy that its members have created, through many years of outstanding front line service , and through the work of the 111 (F) Squadron Association. If you are interested in joining the Association, then please contact us via our Application Form. Them), in reference to the Squadrons' previous role in maintaining the air defence of the UK. Link to The Royal Air Force Museum. Link to The Royal Air Force Benevolent Fund. Create a free website.