Aprillia,Augusta,Ajs,Akland (old brit) Arial, and Armstrong too
Bsa, Bultaco, Benz (yes germany) BMW, (where I live 1) Brough Superior.
Cagiva, Coventry Climax, CCM, Can Am
DWK, Desmodici (think that's really a) Ducatti lol, Derbi
Enfield, Excelsior (very old brit)
Fantic (maily trail style but yes did a chopper too lol), Frances Barnett,
Girelli, Gas Gas (trials bikes)
Honda, Heskth (still in production if you have the money they will build you one lol) Houynsung (chinese sorry if spellings are a bit off lol) Harley Davidson (not forgetting where I live 2) Humber, Husqvarna.
Indian, Italjet.
Jawa (CZ), Jinlun, James (old uk)
Kawazaki, KTM.
Laverda, Lambretta, Lea Francis
Moto Morini, Moto Guzzi, MZ, Malagutti, Matchless, Montessa, Mobicane, MV Augusta.
Norton, Nevel, NSU
OK (Supreme)
Panther (old uk), Pagasus, Peugeot, Piaggiot.
Quasar (uk ride in not on lol)
Raleigh (yep uk built motor bikes too), Royal Enfield, Rudge-Whitworth.
Sach, Saxon, Suzuki. SYM
Thomas, Trabant-Bsa (Germany), Triumph.
Ural, UFO (Italy Late 70's early 80's)
Vauxhall (early UK), Vellocette, Vincent, Voyger (late 80's sit in thing).
Wasp (sidcar/trail outfits), Watsonian (yep made a bike too).
Xingfu (china started with Jawa clones)
Y2K (no really was a jet powered bike Allison Rolls Royce 320HP lol), Yamaha, Yamaguchi, Yankee (yup USofA), Yung Shin (Tiwan).
Zenith (old uk), Zundapp (German outfits), Zhufeng (China)
Hope you enjoyed this list lol....
oww my brains melting I am sorry for those I've forgotten lol.