Ah, hadn’t seen that in your other pictures. think you might still struggle though. Heres the definition from dvla
Cooking Facilities
– That are an integral part of the vehicle living accommodation and is mounted independently of other items.
– That are secured to the vehicle floor and/or side wall.
– Secured as a permanent feature, (bolted, riveted, screwed, or welded.
– The cooking facility must consist of a minimum of a two ring cooking facility or a microwave in either case having a fuel/power source
– If the cooking facility is fueled by gas having a remote fuel supply, the fuel supply pipe must be permanently secured to the
vehicle structure
– If the cooking facility is fueled by gas having a remote fuel supply, the fuel reservoir must be secured in a storage cupboard
or the reservoir secured to the vehicle structure.