The British like to do things the british way. And so they writie bBritisch too. There are a lot of words that are written differently in England, than they are internationally, and when you target THESE keywords, you can often get a lot cheaper PPC costs when targeting the British market – specially if you have a .co.uk domain.
Here’s a good overview of different spellings between the US+the rest of the world and the British:
http://www.tysto.com/articles05/q1/20050324uk-us.shtml
Go through the list and see if there are keywords that are worth setting up own ads & maybe even landing pages for. Despite being such a small country in size, the British still spend a lot of money online.
