The Short S.1 Cockle was a single-seat sport monoplane flying boat, with a novel monocoque duralumin hull. It was underpowered and so did not leave the water easily, but it proved that watertight and corrosion-resistant hulls could be built from metal.

The Blackburne Tomtit was a 670 cc V-twin aero engine for light aircraft that was designed and produced by Burney and Blackburne Limited. Burney and Blackburne was based at Bookham, Surrey, England and was a former motorcycle manufacturer.