To be a 'National Show' does it have to be Earls Court etc?
Im sure there must be some schools/colleges with a suitable sized hall, say somewhere in the midlands or Manchester areas? Letting should be more affordable, not mention fairer costs for those attending from up & down UK.
Can you get enough traders?
School canteen please...down the corridor and to your left.
Main assembly hall for regular 'flat carpet' stuff and sports hall for off-road.
1/5 2 strokes outdoors on the sports field.
Our local high school isnt exactly massive, but could accommodate these easily, Im sure England has at least the same if not better.
Bearing in mind that its a 'show' with a few races thrown in, hopefully not as many headaches with shed-loads of race entrants to contend with.