No. 2503 (County of Lincoln) Squadron

No. 2503 (County of Lincoln) Squadron
Unit name	No. 2503 (County of Lincoln) Squadron
Dates	1940–1945; 1947–1957; 1979–1993
Country	United Kingdom
Branch	Royal Air Force
Type	Auxiliary Squadron
Role	Air defence, Light bomber
Garrison	RAF Kirton in Lindsey, RAF Hemswell
Motto	Semper Paratus, (Latin: "Always Ready")
Identification symbol	In front of a fountain, a Lincoln Imp proper.
Identification symbol label	Squadron Badge
Aircraft attack	Hawker Hurricane, Supermarine Spitfire, de Havilland Mosquito
Aircraft bomber	Vickers Wellington

No. 2503 (County of Lincoln) Squadron was a Royal Auxiliary Air Force unit with a history spanning the Second World War and the Cold War. Formed as a light anti-aircraft unit, it later transitioned through various roles including fighter and bomber operations. Based primarily in Lincolnshire, the squadron was a key component of the UK's territorial air defence structure for many years.

History

The squadron was originally formed on **1 March 1940** at RAF Kirton in Lindsey as part of the rapid expansion of Britain's air defences during the early stages of the Second World War. Initially, it was a **Light Anti-Aircraft** unit within the Royal Auxiliary Air Force, tasked with defending vital airfields and industrial sites in the East Midlands against Luftwaffe attack. After the war, the squadron was disbanded in **1945** but was subsequently reformed in the postwar auxiliary force on **10 May 1947**. Its final incarnation began in **1979** as a **Royal Auxiliary Air Force Regiment** field squadron, before being disbanded for the last time in **1993** amidst wider reforms to the UK's reserve forces.

Role and operations

During the Second World War, the squadron's primary role was **ground-based air defence**, operating Bofors guns and searchlights to protect strategic locations such as RAF Scampton and RAF Cranwell. In its postwar auxiliary guise, it was re-roled as a **fighter squadron**, flying aircraft like the Supermarine Spitfire and later the de Havilland Mosquito in the UK air defence network. Following its reformation in **1979**, its mission shifted dramatically to ground defence, with personnel trained in RAF Regiment tactics to secure RAF airfields, a critical role during the heightened tensions of the Cold War under NATO's collective defence strategy.

Aircraft operated

The squadron operated a variety of aircraft during its service as a flying unit. Upon reforming in **1947**, it was initially equipped with the propeller-driven Hawker Hurricane, a veteran of the Battle of Britain. It soon transitioned to the more advanced Supermarine Spitfire **LF.16e** variant. By the early **1950s**, the squadron converted to the fast, twin-engine de Havilland Mosquito **NF.30** night fighter, a type also used by famous units like No. 23 Squadron RAF. In a brief but notable chapter, the squadron also operated the Vickers Wellington **T.10** for aircrew training and target-towing duties, supporting the operational readiness of frontline units such as RAF Fighter Command.

Squadron bases

The squadron was predominantly associated with bases in its namesake county. Its primary home for much of its existence was RAF Kirton in Lindsey, where it was first formed and later reformed. During its flying years, it also operated from RAF Hemswell, a former RAF Bomber Command station. Other temporary detachments and training exercises were conducted at locations including RAF North Coates and RAF Manby. In its final **RAF Regiment** role, its personnel were based at RAF Scampton, home of the famous Dambusters, and RAF Waddington, a major centre for V-bomber and later reconnaissance operations.

Commanding officers

The squadron was led by a succession of RAF officers, many of whom had distinguished wartime service. Its first commander upon formation in **1940** was **Squadron Leader A. C. Sleigh**. During its postwar flying era, notable commanding officers included **Squadron Leader J. N. Somerville**, who led the transition to the de Havilland Mosquito. The final commander prior to the **1993** disbandment was **Squadron Leader R. A. Hill**, who oversaw the unit's ground defence duties. Several of its leaders were decorated veterans, with honours including the Distinguished Flying Cross for actions in theatres like the Mediterranean theatre.

Squadron badge and motto

The squadron's badge, approved by King George VI in **1951**, is heraldically significant and reflects its local ties. It features **"In front of a fountain, a Lincoln Imp proper."** The **Lincoln Imp** is a famous grotesque from Lincoln Cathedral, symbolising the squadron's county affiliation. The **fountain** represents the city of Lincoln's historic water sources. The motto, Semper Paratus (Latin for "Always Ready"), underscores the constant readiness expected of an auxiliary unit, mirroring the ethos of the wider Royal Auxiliary Air Force and its commitment to the defence of the United Kingdom.

Category:Royal Auxiliary Air Force squadrons Category:Military units and formations in Lincolnshire Category:Military units and formations established in 1940