Complex sentence: Following the election of the MacDonald government in 1924, the Burney Scheme was rejected and replaced by the Imperial Airship Scheme, which featured competitive designs from a Vickers subsidiary, the Airship Guarantee Co., and the Royal Airship Works.
Split into simpler sentences: Following the election of the MacDonald government in 1924, the Burney Scheme was rejected and replaced by its own. The Imperial Airship Scheme would feature competitive designs from a Vickers subsidiary, the Airship Guarantee Co., and the Royal Airship Works.