Wow, well done for halving yourself! 
10st is really slim for a guy (I weigh that and I'm female and shorter than you
), have you thought about building muscle, purely to help with the loose skin issue? It obviously won't completely solve the problem, but would make it less obvious in the mean time.
But you look great, and well done for having so much discipline.

10st is really slim for a guy (I weigh that and I'm female and shorter than you
But you look great, and well done for having so much discipline.