Sometime in the 1970's a Lufthansa 747 heading out for a N Atlantic crossing and working Scottish.
Scottish - "Lufthansa 430 traffic information is two Royal Air Force fighter aircraft operating in your two o'clock, range 16 miles, similar level"
Lufthansa - "Thankyou Scottish, could you make sure they do not get too close to me, thankyou."
Scottish - "Ehhhhhh, roger"
LH - It is just that I have ended up in the water once already in my life courtesy of the Royal Air Force and do not wish to repeat the exercise!"