Those who have expressed views about oil on this thread should click
http://www.bbc.co.uk/news/uk-scotland-scotland-politics-20042070 and scroll down to the map. I don't think that Scotland's residents will vote for independence next year but, if they do, the map shows pretty accurately the sea areas that would 'belong' to Scotland and England separately.
The oil and gas in the English part...ie the southern North Sea...are dwindling fast, whereas the Scottish part to the north is where new discoveries are still being made. Cameron was up in Aberdeen a few months ago 'celebrating' one.
Note that England, having no coastline abutting it, would have no element
whatsoever of the North Atlantic region.