Related Clues:

• John Kerr regularly proves to be expert
• No-hoper's heading off to expert
• Expert on royalty
• At last moment, defeat leaders of party in power
• Impressive person has John doubled up, we hear
• Opera in state capital only showing second half
• Seed in a fruit
• Slang word for something exceptionally remarkable
• Singer left before 'Posh', twice!
• Opera, a wonderful thing
• Female pop singer wailed, not half, having turned up
• Long, unbroken take, in film lingo
• One of 21 on a die
• Big one
• Single uninterrupted process or operation; or an outstanding person or thing