Related Clues:

• Opening like St. Peter's gates, but less quietly
• Guillotine almost too soon
• Before the usual time
• Before the ETA
• King in London losing head at start of day
• Like king or queen in Bow, head off in good time
• Rely on revision to secure top mark soon
• Before the expected time
• Like a peer before anyone else?
• Prematurely old
• Almost executed at the wrong time
• Apt "The Wizard of Oz" family name
• Big-time blow
• Reason for a warning
• Way beyond a breeze