Possible Clues:

• One of those in 8 across is looking for Mark locally?
• Charlatan
• He deceptively takes business partner to a curry without money
• Swindler (informal)
• One who does provide staff to support Conservative
• One with a racket
• Co-worker takes in new source of dodgy income
• Anchormen disregard her source of dodgy income
• Sting operator
• Some havoc on Manitoulin produced by fraudster