Possible Clues:

• 'At --', single written and recorded by Janis Ian
• A number noticed, happening to enter
• E-mag?
• Prime case of extortion following incident in Home Counties
• Figure observed boxing tournament, perhaps
• One short of a majority?
• Number observed hosting sporting competition, perhaps
• Number
• In view of this, it happens to be said to be sweet
• Said to be sweet to get seen about the happening