Here in the states... most fall under local ordinances.
Please check with your local food authority... if you are transporting hot food from point A to point B.
Some localities will require point A be a certified kitchen as a starting point.
Insurance, license, tax ID?
Cooking at Mason-Dixon BBQ Services
Lang 84 Deluxe Kitchen known as "The Glamazon" , Custom Klose Backyard Chef... of Snot, and a 22.5 WSM
Lang 60 Mobile - The Damsel II, Lang 48 Patio - The Damsel, Bubba Keg Grill - RIP, Double Barrel Smoker and a BSKD