I looked briefly at the possibility of applying the business model to the UK, I found a good source for legal info to be farmers markets and local food markets

I looked briefly at the possibility of applying the business model to the UK, I found a good source for legal info to be farmers markets and local food markets where people already sell homemade foods as the organizers have often already put a lot of work into researching the legal (and insurance) issues surrounding the business. Also if you want to get some initial providers onboard, checkout Craigslist/Gumtree as often people sell home cooked food services on there.