Similarly any monument code should be sent to the BBC and other TV companies as well as EH and NT and they should be put in a position where they want to sign up adopt and implement it.
Great idea sending it to both the guardians and the broadcasters. It's the mixed messages of the former that have facilitated the acts of disrespect by the latter. The former ought to have publicised a simple No Disrespect message about monuments many years ago. The Beeb and Channel 4 would never have dared flout it if they had.