There's no L85 (= SA80) on this picture. The gun in the background has a magazine like the FN P90.
The gun in the front is not quite an EM-2 but a EM-1: https://en.wikipedia.org/wiki/EM-2_rifle#/media/File:EM-1_%22Thorpe%22_Rifle,_Prototype_.280_cal.jpg .

the background gun is monolith arms p-12 shotgun