Forget Selfridges or Liberty! Fenwicks Contemporary Womenswear department has the biggest selection of Sonia Rykiel this side of Paris, amongst other great labels such as Thomsen, Dagmar, Les-Prairies-de-Paris and See by Chloe. But the best thing about it – it's quiet!
I can't pass without dropping in, Orcs Nest is a small independent boardgame, D&D etc store that's been around forever(1987)... and has the best logo. Good selection of games for younger kids too.
Audiophile paradise. Boasting one of the coolest looking and beautifully crafted sound-systems I've ever seen. More listening bar than club, it has a low key vibe with a diverse roaster of talented DJ's spinning an eclectic mix of tunes and full albums.