Oh man I only just spotted this thread and heard about SteelCon, HOURS after I've booked a holiday over the same dates. And it would've been so handy to pop over from Manchester.
Ah well, there's always next year!
Any other decent cons in the UK? Have considered DerbyCon and Shmoo in the past but it always works out so pricey with flights and hotels. Plus like you guys said, it sounds a little lonely when none of your friends are interested in coming..