Google search: lfgss.com + London bike shops brought up this:
https://www.lfgss.com/shops.html
Your best bet is to pick up the phone and call the shops to see what they've got in stock.
The obvious ones in Central London are:
BLB is the only shop I can think of that has 2nd hand parts
Also you should post in the mods thread and ask for this to be moved to classifieds > wanted
@hugo7 started
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Google search: lfgss.com + London bike shops brought up this:
https://www.lfgss.com/shops.html
Your best bet is to pick up the phone and call the shops to see what they've got in stock.
The obvious ones in Central London are:
BLB is the only shop I can think of that has 2nd hand parts
Also you should post in the mods thread and ask for this to be moved to classifieds > wanted