In the UK the KEF brand is mainstream, high-end and well respected, while Wilson are massively overpriced due to £/$ conversion and Hansen are barely known; that is not to say that they are not highly capable speakers.
I would have thought that the KEF Blades (which I have heard and was very impressed) would have been a much better demonstration speaker than a stand-mount monitor type.
That's the thing, M isn't only a British brand. It's looking to be a global brand. I live in NYC. We have a population of 8.4mm highly opinionated people

. I look at Kefs website and there isn't a single dealer listed that carries the Muon or Blade in NYC. Even M does better than that. It might be good local brand, but its niche brand globally in my opinion.
These demos are done in cities like NY and London as their global cities to the world.