Possible Clues:

• Designer of machinery
• Manipulate one instrumental in bridge construction?
• Plan trap wearing mask, hiding face
• Mastermind converted in Greene
• Mastermind in Greene running riot
• Turns up, objective is cut short in period of rule by Oriental mastermind
• One of those in The Cars and Queen working in the studio
• Direct English poet's never drinking alcohol
• One of those from The Cars and Queen working in the sound studio
• Train operator