No. 300 (Polish) "Land of Masovia" Bomber Squadron was one of several Polish squadrons during the Second World War. It was formed as part of an agreement between the Polish Government in Exile and the United Kingdom in 1940. 300 Squadron is now represented by 300 Squadron of the Royal Air Force Air Cadets, which made the alliance with the Polish Air Force is 1994.

Royal Air Force Swinderby or more simply RAF Swinderby is a former Royal Air Force station airfield opened in 1940, one of the last of the stations completed under the RAF's expansion plans started in the 1930s. It was built near the village of Swinderby, Lincolnshire just off the south east side of the A46 between Newark-on-Trent, Nottinghamshire and Lincoln, Lincolnshire, England.