Matsuko Yokokoji graduated from Kuwazawa Design College in Tokyo in 1983. From two years prior to this she freelanced as a graphic designer and became the art director for Imperial Enterprise Inc. a company specialising in direct marketing in 1984. Yokokoji first came to the UK in 1987 to study printmaking and computer graphics at Guildhall University where she first met Harwood (another founder member of Mongrel). From 1991-1995 she worked as a researcher/coordinator for Japanese TV companies. In 1994 Yokokoji worked for Harwood’s ‘Rehearsal of Memory’ which first showed at Video Positive 94’ and later it became a CD-ROM which installation went 12 cities and 9 countries. ‘Rehearsal of Memory’ is a The Centre Pompidou’s permanent collection. In 1995 she co-founded the Mongrel group where she coordinates/designs Mongels projects. She is a company’s director of ‘Mongrel Ltd.’, there her role is to run the company as a general manager.
She now lives and works in Southend-on-Sea with Harwood and their son Lani where they continue their software development for Mongrel and create independent projects.