I got my first Graze box today. It's excellent!
For anyone who missed it on Twitter, go to http://www.graze.com and you can get a free graze box, and then one half price - that's 2 boxes of health snacks for £1.49! Just enter promo code - JYG2Z91C to receive the discount.
I will admit that it's slightly calorific, but you can choose not to have nuts in it, which would definitely make a difference. And of course it's meant to be grazed on all day to keep your blood sugar level, not scoffed in one sitting.