I'm going in armed with Nakd bars for the first 30 - 40 miles and High5 Gels via my awesome Salomon Hydrapak (no faffing with sticky packets or fingers) and a banana for the hills. The rather awesome
@themosquitoking will be meeting me at THAT bend after Box Hill to swap over water bottles, Hydrapaks, Nakd bars and a Welsh Cake to munch right there while I regale stories of adventure / catch my breath / throw up.
That's the plan if it doesn't rain. If it does I may have to detour to Carshalton to get my stuff...