Yesterday I totally forewent gels, and only had one bottle of SIS PSP22 energy drink. My bladder was full of water, and I ate much more frequently than I have in the past - but all the food was natural (not necessarily healthy LOL) - the list was : dates, choc espresso beans, Loula's homemade flapjack, chocolate coated pretzels (amazing!!!) and a Jaffa cake...
The result was a lot better balance of energy, and only starting to feel hungry with about 2 miles to go (mostly because I had stopped eating quite so much over the last 4 or 5 miles as we were pacing it out a bit). I felt a lot better during the run, and a lot better after.
I've come to the conclusion that gels are definitely not for me - I seem to crash more after them, than the lift they give me... so, natural food it is from now on!