Hi all.
If you are a member contact BASC as they do an excellent hand-out called SHOOTING [Rights of way & access.] England and Wales.
It would appear that an offence is only commited if in `consequence a user of the carriageway is injured, interrupted or endangered.`
That has to do with the clause `within fifty feet of the centre of the highway`.
Obviously you must be have permission to shoot onto that land.
HWH.