ive actually heard(not confirmed) that scotland is seeing its tax money go to England and that they are actually rather self sufficient.
And the reason probably why the majority of tax money gets invested into England is because well... It makes up the majority of the UK (some people should try looking at a map)
If you take that into account I'm sure the overall amount that goes to Scotland would be on equal balance with their overall needs and the same goes for Wales and Northern Ireland.
[m]http://www.youtube.com/watch?v=L1sYgknWGSA[/m]