Having watched documentaries about the Central Asian pleasures of eating sheep's heads and the testicles of anything that moves, and having created a schedule that prevents us from stopping for more than twelve seconds at a time - we decided to pursue providers of army rations for sponsorship.
Within 60 seconds of sending a begging email, my phone rang - it was Semma4Direct, responding in true military fashion. One discussion later and it was agreed that they'd provide us each with 10 days worth of food - so that we can remain alive whilst we cross the deserts.

Each pack (and we're getting 20) contains:

2 main meals, 1 pudding, 1 soup, 1 pate, 1 pack of oatmeal blocks, 2 biscuits, 2 bars of choccy, 1 pack of sweets, 1 orange drink, chewing gum, wipes, weatherproof matches, water purifying tablets, tea, coffee, hot chocolate and more.

We're going to eat like kings. Thanks a million to Alan and Nicky at Semma4Direct.