Dear Gary,
Such matters I happen to have a bit of experience. Site owners have a greate deal of power over the Pitch, but you must be aware of the Conditions on Tenancy.
I am sorry to say, that, in most instances, the min. control is 1 metre outside of the static. But, all depends on on Tenancy Agreement that is extant.
If in doubt, you must consult a solicitor.
Regards, Bernard