Looking at what you eat I'm going with a vote for underfed. I am 26, 10 lbs lighter than you (meaning I have a lower daily base caloric requirement), and have a very similar schedule workout schedule/active lifestyle - granted I'm a powerlifter, so I lift very heavy for low reps. I also run regularly and play any sport that happens to come along. All while cycling 150-200 miles a week between commuting and road work. I took the liberty of calculating your sample diet total kCals - it's about 1500/day. I would guesstimate I eat 2-4 times as much as you on any given day (3000-4500 calories/day). And my guesstimate is pretty close, I used to obsessively measure my food/calorie intake for lifting. For a 5'10" 25-year-old weighing 13 stone, your base calorie requirement is going to be about 2000/day IF you did virtually no physical activity. If you are trying to lose weight you're hurting yourself twice - slowing your metabolism by underfeeding and robbing yourself of the fuel you need to put in good hard workouts. Eat more, see how you feel. Drink plenty of water, get your sleep, and avoid the booze.

Go on livestrong.com, get a MyPlate account, and record everything you eat and all of your activities. As someone else already mentioned, a 500 calorie deficit, or less (from your total calories consumed, NOT your basal metabolic rate) is a good goal to shoot for. A 500 calorie net deficit everyday will add up to about 1 lb of body fat lost / week, as a general rule of thumb. The lower your bf% the more you need to monkey with calorie cycling, carb cycling, etc to keep losing. But for starters, all you need to know is that slow and steady is better than fast and burnt out when it comes to weight loss.