(11 Sep 2015, 4:17 pm)GX03 SVC wrote Stobart Rail are contractors for Nexus Rail. That would be from the possession not so long ago.

It looks like the sign is pointing into the main entrance (from the photo).

Curiosity got the better of me and I found this -http://www.racingpost.com/horses/course_home.sd?crs_id=37&r_date=2015-06-12&topCrsTabs=course_stories#topCrsTabs=course_stories&bottomCrsTabs=statistics