We've been round it in our F3 car in proper racing conditions, and have a double header at Rockingham this summer (joy!). Its considered by virtually the whole of our racing club to be the worst circuit on the calender but the one with the best facilities (even if the outer paddocks are a long trek from the inner paddock)
It is pretty flat, there is a bit of landscaping, but nothing that excites a driver like Paddock Hill Bend at Brands Hatch, Quarry Corner at Castle Combe, The Mountain at Cadwell Park, Craner Curves at Donington...