Related Clues:

• Evidence of payment of postage duty
• Walked heavily, put foot down
• Put down the foot on
• Declare or demand emphatically
• Refuse to give way
• Be firm in demands
• Be firmly demanding
• Demand firmly
• Postal token
• Walked upon
• Maintain firmly
• 'Demand, make sure (6)'
• Maintain what is here during this month
• Is not in this month to give in
• Maintain relatively little in the tin