Ah, the £480,762 question... Wait, the £469,421 qu... no, the £442,810 qu...
At this rate we'll all be playing $1,000/$2,000 at the Bellagio before you know it.
Who knows where it's going? Actually the market doesn't think it's going to change a great deal in the next year or two - forward rates at the moment have the pound at about $2.06 in 12 months, and $2.04 in two years' time. ie, people overall don't think there's any great short-term influence that's making the dollar so weak against the pound.