Ah yes - I see it now. It is showing as VS831 - AFAIK, positioning and training flights are given flight numbers in the 800s, but they also have a P or a T suffix.
EMA is certainly used a lot for training flights - a normal day seems to involve hops between LHR, EMA, Prestwick and Manchester.
This a good website to keep an eye on past movements.
http://www.thevssource.com/Nick