Nessie, I hope the stuff from Holland and Barrett helps, trying to run on a verying diet like your can be helping with your energy levels. I just cannot work out how you do all these jobs, are you a Time Lord???? 
Chris, my splits are so close to yours its not worth worrying about, I would try changing your Garmin to show actual pace on a run and see if it makes any difference to your run, it wont change the information stored. My garmin read 1:13:40 which means you came in 5 secs behind me, I reckon thats about right. You ran really well and seemed comfortable all the way, that was a good run from you!!! It was great running with someone same pace as me, we werent trying to get ahead or drag each other back, just a relaxed steady pace. I think I probably could have gone quicker but I am happy to build mileage rather than sprint round. I will do the same on Sunday, steady up the hills and let gravity take effect on the downhills!!! Dont try to catch up on runs lost Chris, maybe add an extra mile onto the next couple of runs but you will not do yourself any good tryng to catch up. You will do enough even if you keep your runs to 10K or so, you know what to expect at a Half so there are no surprises. As you get close remember to taper as its been a while since you run one and dont forget the bulking and hydration. These things are v important when you are off half pace, give yourself every chance to succeed!!!!
Toby, well done mate, I know how difficult it is to loose weight no matter what diet you use. 2st 9lbs is a great weight loss, be very proud!! Wind will always be a bind for runners, we tend to lean into it and that makes us run faster so we loose energy quicker and it eventually affects our pace and endurance. Good running in the conditions.
You do seem to flit about the country quite a bit, nearly as bad as Nessie trying to fit runs in!!! 
5 miles on Tuesday with the club, about 11 min/ml so happy with it, planning 4.5 tomorrow night @ 10 min/ml pace so as not to overdo it before longleat. Hopefully weather is a little less windy on Sunday and will try to keep an eye out for you Toby, just look out for a load of green tshirts and a yellow beanie hat!!!! 