I heard from the guys who had the privilege of working with Sheik Al Maktoum - all they had to do was 'inform in advance' and 100% permission would have been given if requested.
Oh, that's okay then. Just remember if you are planning to be seriously injured or taken ill to give your local ambulance service seven days notice in writing then they'll be able to arrange PPR with the landowner.
Now, I'm sure that the Sheik is a delightful fellow it just so happens that he has had recruited for him a security adviser who appears to be a bit of an ar$e from the reports above.
You may have the right to ask someone to leave your land, it doesn't mean that you should exercise it nor that you can ignore your responsibility to assist in the preservation of life.
Whirlygig - Yes, you've got the right colour.