Armstrong Whitworth Ensign
The Armstrong Whitworth A.W.27 Ensign was a British four-engine monoplane airliner and the largest airliner built in Britain during the Interwar period. The British airline Imperial Airways requested tenders for a large monoplane airliner with four Armstrong Siddeley Tiger engines in 1934.
Source: Wikipedia — Armstrong Whitworth Ensign (CC BY-SA 4.0)