Charlie's my local(ish) bike shop and I can't recommend him enough, especially for singlespeed and fixed parts.
It's the sort of place you go in for one thing, get into a discussion about the relative strength vs weight of alloy vs steel chainrings and end up with his stock out on some kitchen scales.
Of course, the icing on the proverbial is the stickers. He used to run threads for sticker slogan ideas on SingleTrackWorld forum, until the Mods banned him for advertising.
Here's the slogan I won one of his STW forum threads with (on my SS Singular Swift):
And here is without a doubt my favourite he's produced (on my fixed Eddy Merckx):