his experimental installation of a Centaurus engine in a standard Tornado airframe was intended as an insurance against a possible delay in the supply Sabres for the Typhoon.

The Boulton-Paul P.92/2 half-scale model for a Vulture-engined fighter with a large dish-shaped turret in the centre-section, carrying four 20-mm. cannon.

Intended for anti-submarine operation, this Wellington Mk. VII was the Mk.II prototype with a dorsal 40-mm. Vickers "S" gun. Later, the single fin and rudder was replaced by twin units.

The G.A.L. Fleet Shadower in its first form. The first prototype of this carrier-borne reconnaissance aircraft had three fins, two rudders.

The Gloster F.9/37 was first publicly shown to an audience of M.P.s in 1939, and astonished even that gathering by its performance. It crashed shortly afterwards, and was rebuilt with more powerful Taurus III.

The Heston T.1/37 was built to the same specification as the Miles M.15, but the unfortunate fact that it proved impossible to get the required performance within the limits set by the specification rather cramped the builders' style, and the requirement was dropped.

Shown here in its final form, the brilliant Martin-Baker M.B.3 with six 20-mm. cannon, had its' career cut short by a crash which cost the life of Captain Baker.

This Merlin 61-engined Mustang was one of a number of interesting aircraft flown by the Rolls-Royce Test Establishment at Hucknall.