Possible Clues:

• The sort of dishonest lion that might make one nervous
• Collective with turf
• Hoodlums' group
• Bunch of delinquents go north of the border
• Good sport, tall and ungainly
• Criminals in a group go to Scotland
• A lot of labourers go north of the border
• The ___ of Four
• Sharks that dance and sing, e.g
• Criminal mob