Short SA.4 Sperrin VX158
The Sperrin was an experimental design
designed to develop a strategic bomber, perhaps in the
vein of the Boeing B-47 or Russian Tupolov Bear. The
aircraft had four Roll Royce Avon
RA.2 engines mounted one above the other in two nacelles.
Although the project was eventually
cancelled by the Ministry of Supply, the two prototypes did provide
valuable data which was later
used in good in what would become the V-bombers.