I've got to say I think your mate's impression is closer than your own, if he had the L85 he'd be much closer to the right look. Things like the medic pouch he's got, he's wearing that on his right side, it's a standardised piece of kit and it's in a standardised place. Helps with the legit look.
You have the right camo pattern, but the clothing is wrong, a UBACS will be worn instead of a shirt. You're missing an awful lot of kit that would help it look a lot more fleshed out. Your Osprey is so thin that I almost said you had the wrong rig lol, that thing is factory fresh, it's so thin it's insane, I've never actually seen one look so small lol. Get some padding shoved into it or something, and you could look into covering that huge amount of open velcro with cummerbunds as your mate's done, or an ops panel.
Do your gloves not try to stick to it or anything? The straps on my gloves manage to stick to the tiny strips of velcro on my bloody mag pouches, I think I'd lose my sanity if they had the entire front of the rig to stick to lol.
Some Blackhawk knee pads would be another functional addition you could look into, they'd help flesh out the look as well as actually being helpful, and you could also swap the black leather boots for some Desert Elite Lowas, I managed to snag mine for less than £9 on Ebay, they're £140 new. Excellent boots and issued in Afghan. All minor changes that don't break the bank that would help with the look.
Really though there's a lot of stuff to change before you can really call it a loadout, I'd call it more a base impression. It's clear you're going for a British vibe, but it's just not specific enough to actually resemble the Army's kit.
If you want I could give you a full list of items, but of course there's nothing wrong with playing as you do with the kit you have, it all just depends how deeply you want to delve into it. It can be a bit of a money pit if you want to go the whole 9 yards.
and don't got forget to cock your weapon with your left hand 
