Possible Clues:

• Picture in one's mind
• Form a picture of
• Put some thought to
• Conceptualise one meeting involving leader of executives
• Identity destroyed almost? Imagine!
• Imagine current discussion without involvement of Brexiteers' leader
• Imagine the setter had worried interminably
• Picture in the mind I see swallowing ecstasy
• Imagine something swimmer consumed
• I see frames close to the picture