I'm in that weight loss plateau stage and it's so frustrating!!! 

I'm 12.5 stone and need to lose about 2, 2 and a half. I've been sticking very well to a 1300/1400 calorie a day diet (trying to cut out processed foods within this). My DP and I are also walking a lot for exercise - we walked 6 miles each on Thursday Friday Saturday and today we did about 9. Don't have any other exercise really but we're speedy walkers and when I'm fitter I'll start running again.
Question is - I never eat back my exercise calories and am just not losing anything right now. In the past when I've calorie - cycled (eaten a bit more for a day then gone back) it seemed to have helped, but that may just have been my imagination! Any advice would help 