Possible Clues:

• Contract's way out
• Quiet house by lake in Cornish location offers a means of escape
• Escape from Cornish town, retaining power and unlimited influence
• Way out with triumphal expression after toilet at the local
• Way out from wind tunnel
• Weakness of contract in card game with North or South holding hearts
• Small room European's holding in hotel -- means of escape needed
• Something exploited by a tax adviser
• Group of people put back golf feature -- a legal omission?
• Mistake in legislation