On the one I did at elvington 6 years ago there was 2 different companies operating on site so it was separate insurances for the 2 companies (if everything was done through 1 company it was 1 lot of insurance and it covered you for the day for more laps/cars). The one the misses done at brands hatch was one lot of insurance and you we're covered for extra laps or different cars.
I enjoyed the day I done and want to do another one at good wood as I want to drive a Viper and do one on a track as elvington was on an airfield with cones making a track. The other half enjoyed her day apart from it being a bit wet.