I have a flat field suitable for caravan rallies, but it is not brilliant for camping (no toilets/showers) unless we hire a portaloo. There's plenty of space and its staggering distance from the pub. Have had several Landie caravan rallies here before including the Range Rover Register and SADLRC. Typically, they have used this as a base to go green laning on Salisbury Plain on a Saturday, and then to a local P&P site on Sunday.
Picture shows the rally field (although this one obviously wasn't landie owners)
BTW - location is near Fordingbridge , Hants/Dorset border
Happy to host a Landyzone meet