Yeah some of the Ford shows I went to years back used to have as big an area for traders as the whole show consumed there, but then I don't think that is a particularly big show? Certainly not compared to Ford Fair at Silverstone or Trax at Silverstone (not sure if that's still going)
Hopefully some of the other shows later in the year will have more trade stands! Nissan Day at Rockingham I am guessing might be a decent size..