Actually given the relevant sizes of Regular and Territorial forces and the huge amount of work done by the regulars to keep it all together I think the Regular forces are under represented. But I've only been a Territorial for 36 years so what do I know.
Very true, in the past my unit has written citations and awards have been given. However certain CO's would not or did not write them so nothing appeared. i would be curious to see how many were written.
Try JSP 761, "Honours & Awards in the Armed Forces". It lays out the criteria (& rank range!) for certain awards & gives examples of specimen citations. The specimen citations are an OK starting point, but you'd need to be significantly better than these if you're going to get your citation through the various levels of filter.
It's "Restricted - Honours", so I can't post a link. It is on DII somewhere however...