Possible Clues:

• Prohibition therefore encompasses qualification in business
• English doctor on old Greek ship gets ban
• Official prohibition as on trade
• Stop bishop interrupting game or playing
• This writer set up function, circumventing pub ban
• 'Despite the prohibition for 'em, to the pub they go (7)'
• Ban the bog with the mare
• Ban doctor probing part of head and leave
• Component of some economic sanctions
• It's forbidden for 'em to go after the pub