Good for you Owen!
It's kind of against the ethos of weight loss etc., but if you want to make a business of Primal food i would suggest having a good range of amazing Primal sweets and desserts. Ice creams made with coconut milk, pancakes etc. Health conscious people will flock to these products - just think of how many people eat vegan desserts who have no ethical issues with eating meat.
Anyway, keep us in the loop! I'm also in teh UK so looking forward to seeing how it turns out What festivals are you planning to start with?
"I think the basic anti-aging diet is also the best diet for prevention and treatment of diabetes, scleroderma, and the various "connective tissue diseases." This would emphasize high protein, low unsaturated fats, low iron, and high antioxidant consumption, with a moderate or low starch consumption.
In practice, this means that a major part of the diet should be milk, cheese, eggs, shellfish, fruits and coconut oil, with vitamin E and salt as the safest supplements."
- Ray Peat