This is similar to the point I made here in respect of Jubilee medals.
However, unlike for Jubilee medals, the CFM regulation says that qualifying service is :
a. Aggregated service after the age of eighteen as a uniformed Cadet Force Adult Volunteer in any of the Cadet Forces listed in paragraph 6.
b. Service after the age of eighteen as a cadet in any of the Cadet Forces listed in paragraph 6, up to a maximum of two years’ service.
I agree that this is grossly unfair and is demoralising to the hard work put in by CIs across the corps.