The £/$ is just in the normal Forex 'breathing' range of 1.6-1.7 It is a fine balancing act between bad news in the UK, and then bad news in the US. It took a big fall the other day, which means it will at some point over the next few days climb. Big changes on Forex 95% of the time result in a rebound.
If Gordon Brown goes in January, it should break the 1.7 mark, otherwise it will probably be around election time.