Related Clues:

• Not letting go of double figures over a town
• You'll catch up with a town by hanging on like this
• Ten of this over a town won't let go
• Each town gets 'x' for holding on
• Ability to stick to one below Jack in each urban centre
• Doggedly continuing commentary on Coventry v. Leicester after a red card each?
• Bulldog quality
• Number a town that's owned by a bulldog
• Persistent determination, doggedness
• Dogged resolve
• Doggedly pursuing decimal basis for each urban area
• Persistence, resolution
• Doggedness shown by a few from each large town
• Firmness of hold
• Firm grasp