: The initial design called for Bristol Hercules engines, though the Rolls-Royce Griffon was considered a potential future substitute.
You can find more technical discussions and original design drawings on the Secret Projects Forum . (159).jpg
: 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. : The initial design called for Bristol Hercules
British B.1/39 Heavy Bomber Competition - Secret Projects Forum (159).jpg
: 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.