My great-grandfather's Khedive's Star has a soldered hook on the back, presumably attached to a becket on his uniform, to prevent the monstrously heavy item crashing about unfettered!
The Khedive's Star was issued with the British Egypt campaign medal. I have seen Egypt Medals which have been pretty well wrecked from continual contact with the star, and in the medal world it is quite normal to see Egypt medal offered for sale "with usual contact marks". Any which have survived unscathed usually attract a premium.
I may be wrong but I don't think RN/RM ever court mount.
I think you are correct
Sloppy Link. I have often seen naval groups mounted swing style but with an extra length of black material behind the medals to protect them from contact with uniform buttons.