TV Mounting Brackets AS Fairford

I have recently bought a new auto sleeper Fairford from Marquis with an Avtex 18” TV & soundbar. Unfortunately, they are unable to fit AVtex brackets to the walls by the kitchen sink or in the lounge area below the 12 V PowerPoint snd aerial sockets as they involve breaking the waterproof seal in the bathroom wall and are not secure enough in 
the kitchen area to support the bracket. Marquis Suggest a freestanding arrangement on the worksurface.
I was wondering whether anyone had come across this problem and whether there are alternative brackets which can be suspended from the cupboards above the TV power and aerial sockets.
Any advice would be appreciated.

I purchased brackets to fit in those locations back in 2016 when we bought the Fairford. We didn’t fit them, we store the tv on the dining table next to the window and place it on the oven when we wish to watch something which for us is infrequently as the TV is a low priority. If you like watching tv what about a drop/flip down unit?