Sorry to intrude...there’s precedence here. While I’m not an Andrew fanboy...far from it...may he rot in hell....it is not uncommon for retired or seperated military personnel to wear medals they have earned on civilian attire and the US military agrees here (normally for retirees, but not only retirees ...I have done so myself as a gulf war vet when presenting to classes and confirmed I could before hand with the regs- note each service is different on such stuff)...though it is reserved for special occasions. The Queens death would certainly apply here.
Has a lot of reference to regs associated
Again, it’s that he’s wearing medals when the military asked him not to present himself with a military affiliation.
Apparently, the king decided it was too embarrassing for him to endure that consequence, and granted him this exception.