Me!!!!
Oh blimey Neil...Setting me up for a fall!!
Most of the questions were answered on the last post in September

The RAMC TA units were area / county wide; the 3 layer shoulder titles would have "T" "RAMC" and then something like "East Anglian" or "West Riding" and the such like.
Date? Ummmm...betwixt 1908 and 1918. A ten yr window, but the Sgt has neither medal ribbons or any other uniform embellishments (that I can see!!). They are 1907 ptn tunics, so the above date is the best we can do pro tem!