As far as I know, the only support races at Croft will be Porches and both Ginetta series unless there’s something else I haven’t seen? It doesn’t sound on a lot of on track action.
I’m not planning on going to Croft at the moment. I’m planning to go to Britcar at Oulton Park on the Saturday but I may still go to Croft on the Sunday. It involves missing the European GP not that that’s much to worry about!