Related Clues:

• "Bye-bye," to a Brit
• Soho "So long!"
• Last call to raise spirits at Number 10
• So long returning at first and at last
• ''Bye now!''
• "Later," in London
• 'Laters'
• 'À bientôt,' across the Channel
• Leeds leave-taking
• "Later, gator"
• Bye line?
• Thank you — thank you and goodbye!
• So long!
• Father, in Xhosa, and a nickname for 36-Across
• "I must be off, old chap"