Possible Clues:

• Ill-tempered promise — this?!
• “Do you find you can’t finish the ____ like you used to […]?” (Doc Morrissey in The Fall and Rise of Reginald Perrin)
• Fun starting in 1913 irritated a lot left out
• This weapon's found on banks of Calder by seaman
• You're presumably looking at this right now, annoyed by a single conversational piece
• Challenge laid out in front of you in black and white?
• Bridge news: a much-loved part of The Times
• What you're doing that's said to show irritation
• Puzzle
• You're probably looking at this and thinking what am I doing here