Thanks everyone!
To answer the questions that have been asked. I am 5'10".
With regards to life changing, it has hugely. Confidence is back, I'm a lot more outgoing. I think it has had a negative impact on my relationship with my girlfriend as I do find myself getting a lot more attention. People who didn't find me attractive before are now making an effort to come over and speak to me on a night out etc. I've never had it before so I have to admit it did go to my head. We split up for a couple of months, I don't think she could handle it. We are back together now though and things seem to be on the up.
Plan for the future, perhaps get to the 12 stone mark at the start of the new badminton season, I will be playing 4 times a week. At this point, I will start going to the gym again and try and get rid of the flab and get some decent bodytone.
Again, thanks everyone!