Hi, many people have complained that they can't find a way to get Vista from America (cheaper prices). Go to this webpage, and select the seller VGBOOKSFAST, they are selling it for $121, around £70, and they will ship to England.
that sells to a purchaser within the European Union must charge VAT at the rate prevailing in the country to which the product is sent. Alternatively, the retailer may select any country in the Union as the state to which it will account for VAT, and may charge that country's rate on all orders sent into the Union.
You say that the supplier VGBOOKSFAST will ship to the UK, but I'm wondering where you got that information - buyers outside the U.S. cannot buy software via the Amazon.com marketplace.