Also, this was a window when the printers unions in the Uk were going on strike as the first journalist-direct-entry systems were coming into the news print business. Rupert Murdoch went full bore with a new clean build, shut down the old printing, and locked them out. Huge strikes, police on horseback, riots.
ICL was trying to sell the home office/desktop office concept, it was still very much about the styling of a giant desk/cab with a tiny monitor and built in printer, and the key issue was the quality of the keyboard (as ever)
It turns out that seeing more than one line of input in a buffer helps. Who knew?