Having stared in the joinery trades in 1970 I lived through the period and can tell you first hand that the only Japanese tool firm anyone here seems to have heard of back then was Kamasa. By the late 1970s we began to see a few Makita breakers, sanders and planers (bearing in mind that Wolf...
AFAIK Wolf ceased being family controlled at the end of 1981 (confirmed by Companies House search) when they merged with another famous London firm, Kango. I guess it might have been on the retirement of Geoffrey Wolf, but I haven't done much research on that yet.
Kango was part of a larger...