It was Speedsport who built the track as they have done for 15+ years, Ole Olsen was on track and the watering van had Danish plates with Vojens on the side of it.
Apparently the shale that is always in storage was moved during the winter and was contaminated with gravel. Also I suspect the high heat and humidity didn't help the track too.
Cardiff wasn't actually organised by Discovery Sport, it was organised by Paul Bellamy and co from BSI under new compnay name now of Sidetrack Ltd.