The story
The Deep Sandersons were designed by Chris Lawrence, who also often drove his creations in competition. Prior to building the first Deep Sanderson Lawrence had already begun to make a name for himself as a tuner of the Standard engine used in the Triumph TR sports cars and in Lawrence's own Morgan race car. Some of the Deep Sandersons were built by Lawrence and his staff, first at Westerham Motors and later at LawrenceTune Engines, while production of others was contracted out.
The name of the series is an amalgam of the name of Lawrence's father's favorite piece of music, the jazz standard "Deep Henderson", and Lawrence's mother's maiden name.
The Deep Sanderson cars were born out of Lawrence's interest in pursuing his racing career and in particular as a way to get into driving single-seaters.
From Wikipedia’s article on Deep Sanderson, shared under CC BY-SA 4.0.3