Possible Clues:

• Lucrative activity
• Lucrative enterprise in capital for evildoer handling pressure
• It's a rewarding idea to change cricketer
• Lucrative enterprise
• Financially successful scheme
• Capital's parking embraced by villain as source of profit
• Individual invested in well, top source of profit?
• Bread's found somewhere near Harrow to be source of profit
• Highly profitable enterprise
• Profitable thing