lol if your worried that you think you will "flip" (roll) your clio at the ring, I wouldn't bother going if i were you. if you seriously consider that, then make sure you put a cage in it. Db level is 105 at the ring and they will test you if its stupidly loud, But to be honest I doubt apart from a subwoofer, a Zetec S has enough HP to be loud enough to break 105. Dont rev it like a tit in the que to get on or in the car park and you'll be ok. There only a few places where there is enough grass, or gravel to roll your car at the ring, Your more likely to roll it after hitting another car or the barrier etc etc.
You can prevent it by driving within your limits, and not driving like a tit. But if its going to happen its going to happen, you amount of skill or luck will save you. Theres plenty of high kerbs at the ring, sideways into anyone of those could roll the car, same if it digs in on the grass/gravel/into barrier etc etc etc.
Drive your car likes its on a normal road, and dont take risks, and you'll be fine. Oh and go very very steady until you know your way around.