Hi,
if I remember right, GRI-99 was the computer used in Dymo Graphics, called
later Itek systems. Those were used for editorial and composing room text
processing with "intelligent" VDU's with Z80 processors. There were a user
Group for the European users of Itek systems in the 80's. The system was
build in the USA, but I had no idea that the computer could have been
British.
I have used those systems by myself, but now studying history in the
University of Tampere in Finland.
Regards,
Osmo Palonen