Final list for now:

Singer GB
Škoda CS/CZ if possible written Škoda not Skoda
Standard GB
Steyr A
Stutz USA
Sunbeam GB
Tatra CS/CZ
Taylor-Dunn USA
Tempo D
Thames GB
Trabant DDR should be Sachsenring, after 1990 D
Triumph GB I think we have no German Triumph
UAZ SU/RUS
Unic F
Ural SU/RUS
Vanden Plas GB
VELAM F should be written in capital letters
Wales & Edwards GB
Western Star USA & CDN
White-Freightliner USA
Walter CS
Yamaha J
ZiS SU
Zündapp D

I have edited about 300 makes and will leave the rest for other admins ... I shouldn't be so selfish ...