It's always been mentioned before that shooters would have to supply markers for competitions, if there was a shortage of NRA markers, it's in the NRA Bible. It could be the NRA can't organise enough markers in time.
Last year, the Imperial was 17 days solid, and there was very little else happening at Bisley. There was approximately 130 markers across the ranges at any one time. To be fair, I doubt this Autumn will be on the same scale.
When it says no paid markers, does that mean paid by the NRA or paid at all?
F Class don't use NRA markers and CSR self mark. So that leaves Trafalgar, Autumn Action ect. Not as intensive on the marker front as the regular Imperial. So I don't understand why there would be a problem getting markers.