errrr... no. You are WAY adrift there my friend. Marshalls were initially subcontracted; the primary design was carried out at BAC Weybridge. The PRODUCTION series Droop Nose/Visor was exclusively designed and manufactured at BAC Weybridge. A former colleage of mine, while at Weybridge, came up with the extremely complex visor carriage geometry within the nose. He later became one of the most enigmatic (as well as the most knowledgable)
SEO's we ever had on the fleet).