Hi Nobby,
NERCR has an awesome indoor venue. I would suggest getting a series going there, 1 per month, don't let it clash with Worksop or the NE winter regionals and you'll be likely to get a good attendance. Heck, I may even travel up for it too!
In the summer, you have more series's to contend with. With NE regionals, Nationals and then first Sunday in September are the F2-3-4 finals. But build up a loyal club-base during the winter and summer should then look after itself with Buggy racers, I hope.