: The initial design called for Bristol Hercules engines, though the Rolls-Royce Griffon was considered a potential future substitute.
The Bristol Type 159 was a four-engined heavy bomber designed to meet the British Air Ministry's . It is often nicknamed the "Beaubomber" because it was essentially a significantly upscaled version of the successful Bristol Beaufort.
You can find more technical discussions and original design drawings on the Secret Projects Forum .
: Bristol engineers aimed to utilize their experience with the Blenheim and Beaufort. The Type 159 was intended to be longer than the Beaufort and featured a distinctive twin-fin tail design.
: The aircraft was designed to be heavily armed with eight Hispano cannons mounted in two turrets, a configuration similar to the Boulton Paul P.92.
: Although a full-scale mock-up was completed by early 1940, the project was halted in May 1940. The onset of the Battle of Britain forced the RAF to prioritize the production of fighters over new heavy bomber prototypes, leading to the dismantling of the 159 mock-up.