i think it gos by the exchange rate etc.
Europe is ALWAYS more expensive than UK, when it comes to laptops and computers. When Apple set their prices, the dollar was cheap. Now dollar is expensive, so they're getting less. So they've upped the prices.
Best example Aluminium Macbook -> costs the same in US as in UK (within slight deviation depending on the exact exchange rate), while for comparison, Macbook Pro, iMac, Mac Pro are much cheaper in US.
If uMB sees and update at WWDC, it'll see a price increase too...
It's funny because when the £ was strong against the $, for years, Apple never altered prices. Now it's gone the other way and it's a joke to buy a Mac in this country. Go to the USA and buy one there - that's what I say!