Found
this one just by Googling. Don't know how accurate it is, but there is a section about where their data comes from.
I can tell you, being a local an' all, that the UK is a very expensive place to live - I think we have something the third highest CoL in the world, after Japan and Switzerland! The cost of petrol is currently somewhere around 82pence per litre (which is something like $5-6 per gallon). House prices vary, depending on where you live, but expect to pay £300k+ for a 2/3-bed house in the London area. Starting salaries for a University graduate are currently around the gbp£20k region.
If you let me know what kind of info you need, I can do some digging for you (for the UK at least)
Hope this helps,
Rgds
AndyF