The Stiletto is a chick lit contest in the USA, open to entrants around the world. It costs $30 to enter (about £15) and you can pay via PayPal. I'm not 100% sure what the prizes are (I think it's your manuscript being read by an agent and editor) but all entrants will receive two critiques for their money.
Also, if you win a prize, it'll look very impressive on your cover letter to a British agent (Leila Rasheed the author of "Chips, Beans and Limousines" came second in the Young Adult category a few years ago and says she included her placing on her cover letter to her agent).
To enter you need the first 35 pages of your novel, double spaced, plus a synopsis (no more than 5 pages) in one RTF document (don't put your name on it).
I've entered (the paranormal chick lit category) not because I'm desperate to win but because I think it would be helpful to receive two completely impartial critiques (they're quite detailed - you can download a sample report from the website).
The deadline to enter is June 15 and full details are on the website:
These are the categories and judges:
Editor: Latoya Smith, Grand Central Publishing
Agent: Michelle Grajkowski, Three Seas Literary Agency
Editor: Megan McKeever, Pocket
Agent: Elaine Spencer, The Knight Agency
Editor: Callie Lynn Wolfe, Wild Rose Press
Agent: Christine Witthohn, Book Cents Literary Agency
Editor: Beth Adams, Guideposts
Agent: Holly Root, Waxman Agency
Editor: Anica Rissi, Simon Pulse
Agent: Caryn Wiseman, Andrea Brown Literary Agency
p.s. Apparently they haven't had many entries to the Young Adult category and are thinking of pulling it so if you've written a YA novel and want to enter get your entry in quickly!