July 1 - 12, 2009. Free entry to all registered players at Intercasino. No deposit necessary. £10,000 in prizes. Click here for Intercasino Also, roulette tournament for £10,000 July 13-26. Good luck!
It's worth noting that Ken's link takes you to their .com site which lists the prize fund as $10,000, but the equivalent .co.uk site says £10,000. It looks like tournaments, along with other 'promotions', pay out a fixed amount of whatever currency you register your account to play with, rather than do a currency conversion.