Fantastic little bike shop in Hammersmithish - map here: http://1stplacemotorcycles.co.uk/
Really nice and personal service. Doesn’t hold huge amounts of stock, but tends to have the essentials and is always willing to get other bits in really quickly. Phones when the thing’s in, and he’s stayed open til a few minutes past closing a few times when I’ve been late. He appears to have accounts with everyone, though always says that if I want anything he can’t currently get he’ll open an account for it; I’ve bought my Schuberth C3, TCX boots, some Givi bits and several Honda genuine bits and pieces.
He’ll also give you 10% discount if you mention LB.