Some data with regard to event entries over the past few years.
Entries in all classes have been strong throughout 2015 so far. The saloon car class has had a major boost in numbers (aided a little by the addition of the Scimitars) and looks stronger than it has done for many years. The other classes appear stable in terms of entry numbers.
Prescott / Loton & Shelsley have significantly the strongest entries of the year. Goodwood looks like it needs a rethink as it's poorly supported.