Gahhh... my old nemesis - counting the Army Reserve.
When reporting strength we generally report on paid strength by month - that is, the number of soldiers who paraded at least one day in a given month, be it class A, B or C. Units do hold others on strength, some NES, some exempt drill and training; they are not counted. To avoid double-counting of individuals who work full-time in an HQ and part-time at their parent units, pay records are used (at the national level, at least). This also automates the process, and helps reduce the stream of reports and returns demanded of units.
In a given period, there are a number of folks who will not attend every month due to work or other commitments; this expands the bubble somewhat. Thus, saying there are "500 Army Reservists parading in a month" means there are approximately 550 Army Reservists, with 500 parading in an average month. (Numbers are rounded for simplicity, but ratios are close enough).
There have been structural changes over the past several years, removing the Medical elements from the Army Reserve. In addition, for a variety of odd historical reasons, reserve field signals are not in the Army, but rather under the "Assistant Deputy Minister, Information Management" or ADM(IM).
Ballpark figures? LFRR was to grow the Army Reserve in two blocks of roughly 1500: first, to an average monthly paid strength of 16000; then, on order, to continue to expand to 17300 (those numbers have been adjusted downwards to reflect the departure of the Medical reserve).
To date, the Army has achieved the first target; that is, an average monthly parade strength of 16000. (slightly over for the past year, in fact, and remaining steady). To date, the Minister of National Defence has not announced the "second" 1500; that may well be subsumed into the 10 000 reserve growth subsequently announced - the MND appears to have dropped me from his speed dial
and has not told me all the details of his plan.
**Edited due to my typing inability