I'm not sure there's much difference in actual circuit layout - it's just the world championship (and round 1 of the British) use the shiny facilities of 'The Wing' (presumably the British gets to use them as a test run for the World event). The second British event (after the World event) isn't allowed to use the F1 facilities and will have to make do with the Stowe facilities (none
). So paddock location will be different but I'm not sure how much else will be.