Related Clues:

• Perhaps one held up to ridicule at last calmer after explosion
• The foreign investigator to be given honour by the Queen — one who needs rescheduling?
• One of Anita Brookner's tardy arrivals
• Recent convert? That's made clear to me
• He will arrive, after all
• Detective officer initially entering the sea at Nice is poor timekeeper
• It's unfortunately clear to me one's a poor timekeeper
• It's clear to me, anyway, one will miss deadline
• e.g. Banquo at the feast
• Showing pain to me, clear suffering
• Someone who ruins the surprise party, perhaps
• He turns up, after all
• Three notes, the last penned by my entrant after deadline
• Delayed arrival dispersed morale etc
• Fashionable sort?