Penhaligons has lost its way since being acquired by Puig, they discontinued the best scents and watered down what remained... The less said about their newer released the better.
I always wanted to like Floris, beautiful presentation and the Fleming connection but sadly it's just not for me. I've tried quite a few and they just smell plain bad... Santal being the most palatable so of course they discontinued it. I have it on good authority No.89 and Elite have been reformulated and are shadows of their former selves.
TOBS entire product line basically exists for American tourists... Speaking of which T&H was bought by Americans a decade or so ago and they immediately set about reformulating every scent but kept all the original names, they are all clones of popular mens perfumes.
Geo Trumper are special. They don't follow trends, in fact I honestly think the proprietors still think it's 1922. They have some unique scents, I don't love most of them but respect the brand for going their own way.
Czech & Speake make some beautiful complex scents, easily the only London house which passes the sniff test, I would put them on par with any perfumer.
So, yeah...
C&S > GFT > Everyone else.