Matt, Goodwood aren't covered by Manning inclusive trackday policy (I'm not sure about Headley) as Goodwood aren't affiliated with the British Trackday Association (and the other similar group, whose an acronym I forget). There seems to be an issue with Goodwood being unwilling to pay the membership dues; therefore, it is one of the few tracks in England which is a bit of an anomaly for blanket cover.
As I said above, perhaps Headley are offering a different cover or if you were there with MSCC, the cover was in place thanks to the relationship with Headley.
