O'Brien Hi-Fi (Raynes Park, Surrey)
I found this shop 6 1/2 years back and ended up buying a decent little system from them and I have upgraded over the years.
Time and again I have found them helpful, polite, knowledgeable, enthusiastic, caring, genuine ....... a pleasure to deal with and even my wife has mentioned it, unprompted ....... it's a low-key approach, but certainly makes for a comfortable experience.
There is NEVER any sales pressure - it's always about the music and what you hear - if it impresses you, then buy it!
Needless to say - I have done in the past .... and despite doing the rounds recently to try various options for upgrade, it looks as if I will stay with them. Quite simply they have the kit that works together, at least for my ears - and although I have found some other kit elsewhere that impressed me in some ways, I've not found the synergy as a whole - which is, I guess, why I keep returning.
I've had both shop demo and home demo to finalise my decisions when required - invaluable.