Was a thread on this recently IIRC. Seems they're not the real medal but a "commemorative" one, like the National Service/Cold War whatever ones you can buy from the back pages of Air Mail.
Real campaign medals are strictly controlled by BP, hence our not being able to wear the occasional bit of foreign tat on uniform.....
I may be wrong - if I am, it's unbelievably insensitive - do you have a reference halfwayback?