Possible Clues:

• Bridge player, at times
• One asserting he will play the dummy
• One tries to make contract more expensive, collecting 100 pounds
• State writing to gamey type from The Bridge?
• The German outside Cambridge college is one with something to say
• Bridge player choosing trumps
• Cardinal's return broken by female announcer
• Chlorine brought in by more costly successful bidder
• Bridge player who calls trump
• One going through Customs, e.g.