While this article is about Edward, it offers an excellent explanation as to the medals that are often worn by members of the BRF at different events.
The Honours of the Earl of Wessex – Royal Central (http://royalcentral.co.uk/uk/wessexes/the-honours-of-the-earl-of-wessex-89652)
Were Prince Charles and Prince Andrew also awarded the Queen's Silver, Golden and Diamond jubilee medals?
Yes, all the children and grandchildren alive at the time got the medals.
I really appreciated how the article explained the medals/honors that the royals wear. Unfortunately it is likely to be lost on DF commenters who sneer whenever they appear at military event in uniform. :(