Sadly a lot of British 'manufacturers' are actually designers and importers. The following are ,I believe , 'made in Britain' (HOPE - stems, seatposts, clamps, brakes, levers, chainrings, QR, headsets
USE - chainrings, stems, seatposts, bars, bottle cages, QR
MIDDLEBURN - chainrings, cranks, hubs, valve caps
GOLDTEC/BETD - hubs, chainrings and suspension upgrades
BROOKS - saddles, grips
Frames - Orange used to make some of their top end frames here. Apart from bespoke frame builders are there any 'big' manufacturers left actually building in the UK?
Burgtec - bars, stems, hubs, pedals
BETD - also do dropouts, hubs and a few other small bits and bobs like HTII preload nuts.
Renthal - bars and chainrings
Pace are still engineering/manufacturing some of their hardware in the UK but not sure what exactly.
Hope also do BBs and apparently have a chainset, integrated freehub/cassette and pedals in development
Clarks cables are british aren't they?
Goodridge (but I believe they also manufacture in Canada)
Completed: 94 Stumpjumper w. M733; ; 92 Dave Yates 731 ; 97 Parkpre Pro-Elite ; Pace RC200 F6 ; Pace RC300; 82 Gios Super Record ; 97-8 De Rosa Giro D´Italia; ; Banani SPX Track bike ; 89 Alan/Mavic Cross Bike ; 05 Focus Cross Team ; 90 Look MI-80 all-Mavic ; 12 Focus Izalco Team/custom build ; 11 Focus Thunder Custom build
Projects : , Brouwer all-Mavic
Stripped : Pace RC303
Gone : GT Karakoram
Stayed in the family: Kuota Kharma, 04 Stumpjumper FSR
Ceased to be : Dynatech MT3, killed by corroded seatstays.