Sorry - I had meant to post this today. To be brutally honest, I'm not sure why I only got the notification on it yesterday, since the deadline is Tuesday, but some UK writers might have a story kicking around that fits the bill, so the least I can do is mention it.
2007 National Short Story Prize Submissions deadline 31 October 2006
The National Short Story Prize is the world’s largest award for a single short story. It had a hugely successful launch in 2005, with James Lasdun winning the inaugural award of £15,000 for 'An Anxious Man' in May 2006.
Entries will close for the 2007 prize on 31 October 2006. Submissions can be made by authors, their publishers or their agents.
The National Short Story Prize terms and conditions and entry form can be found at http://www.bbc.co.uk/radio4/arts/frontrow/short_story_prize.shtml