He is. These dudes were also reported to be "local emergency response force" operatives attached to the local Police in London. Pretty sure it's safe to say that it's actually the SAS though, based off the Colt Canada IUR SFW rifles and their kit in general. Backpack wireless jamming units, etc.
I don't typically criticize tier 1 operators on their choice of equipment. Pretty sure they're experienced enough to make up their own minds as to what works well for them.