British aircraft production has had to increase massively to ensure a steady supply of replacement aircraft for both the RFC and RNAS.
Between the start of the war and the end of 1914, 193 aircraft were delivered including 30 Single-Seaters, 103 2-Seaters and 60 Experimental and prototypes. In addition 52 seaplanes were completed.
In the first 6 months of 1915 this increased to 478, with 104 Single-Seaters (Bristol, Martinsyde and Sopwith Scouts), 373 2-Seaters (the main type being the BE2) and 11 Experimental and prototypes. In addition 92 seaplanes were completed.
In addition, the British have purchased a further 172 French aircraft in 1915 to date (160 of them 2-Seaters), compared to 7 in 1914.