The image is titled 'LCpl Poulter, Italy 1943' throughout the web: Poulter is, allegedly, a Canadian soldier. This seems to be borne out by his BD which (OK, the image has been colourised later) is of distinctive Canadian pattern and design.
Canadian BD differed quite a bit from so-called UK P40 BD: the cut was more tailored, the dyes used gave it a greener tint over the true khaki of P40 and the button closures at the front, breast pockets and cuffs were hidden.
Having said all that, Poulter wears absolutely no badges of rank and no Arm of Service or unit designators, other than the ribbon of a MM. Either he has just received a new issue purely for PR purposes-or he is British, as many units received Canadian BD issues if Brit stocks were low.
Canada produced no No1 MkVIs: so, how did our supposed Canadian sniper end up with one of these?