Weight / Fat loss

Thanks for the reply. I struggle to get anywhere near that amount of protein in a day which is why I'm a bit on the thin side plus i enjoy cardio (sports/cycling/skipping etc) but it doesn't help my cause. 8 years ago I got really gym obsessed, protein shakes + l-glutamine + a whole chicken a day and it took a year to put on a stone and robbed me of the pleasure of eating, it was a chore eating every 2.5 hours (not to mention the constipation). I then got salmonella poisoning and lost 1.5 stone in two weeks, quit the gym and took up boozing and smoking again.
This time my approach is more balanced with long term goals but at 6'2" and only 11.5 stone it's going to require serious dedication, bonus is I get to eat free at work so I stuff my face at every opportunity!

I think you went around this totally the wrong way. All that chicken breasts & brocolli nonsense the bodybuilding gaylords do?

EAT REAL FOOD! Learn to love meat and dairy. Do not shy away from fat. If you want to put some mass on that gangly 6'2" frame of yours. You should commence a progressively challenging weight training regimen involving, Squats, Deadlifts and Bench Press. And try to intake 5000kcal per day. its not forever, but will get you big faster than steroids. Yes you will gain fat with your muscle, but easy to lose afterwards.

Before you wince at the calorie count, remember that a hard working athlete can consume in the Region of 12000 kcal a day and still be skinny & lean.
http://blogs.wsj.com/health/2008/08/13/the-michael-phelps-diet-dont-try-it-at-home/
You need a surplus to grow. If you go for it, you will experience something akin to a second puberty.