Possible Clues:

• French port at mouth of River Seine
• Where to find Norman Lamont, at first? He turns up at rave, smashed
• What's in the toilet? A note
• Port? Litres English possess right for drinking
• Reveal criminal with heroin in Channel port
• Chap upset that ladies keep touching the port
• French city and UNESCO world heritage site on the Seine
• Opposing sides in league game keep playing here in France
• City on the English Channel
• In France, the French might hear about five such