Our exhcnage rate is falling as the markets are nervous about the impact of a possible split, so it means when you buy Euros, you get less of them for your quid than you did a week ago. The same with USD.
A month ago you'd have got ~$1.68 for your quid, now you get ~$1.60. Makes little difference to Joe Public given relatively low personal spending on a holiday or business trip, but a big difference to companies with big sums needing to flow in either direction. This graph should default to a month of USD to show the slump in a convenient curve, the Euro is a little less clear thanks to their decision to bin interest rates, but you get the idea.
http://www.bbc.co.uk/news/business/m...cy/default.stm
Next Friday things may either settle and revert, or very much not with some predictions trying to grab headlines with -15% claims. We shall see.