Does anyone know where I can buy one of these from preferably in the uk

The standard fuel cap is scratching my paint work bad when Taking in and off car, Does anyone know where I can get this from in the uk 

I have never had a OEM locking cap Scratch the Car.  Key in unlock, remove key,  remove cap.  Return cap and lock. remove key, on my FOB I only have my Ignition key, House key and gas cap key on it.

I have see those on ebay and places from time to tin.  I never saw the need.

My standard fuel cap doesn't contact the bodywork at all. Is the filler cap got recessed too far into the body somehow. I wonder if the filler pipe fixing has come adrift and it's moved