Complex sentence: Ricardo plc is a British publicly listed company named after its founder, Sir Harry Ricardo originally incorporated and registered as Engine Patents Ltd in 1915 and since 1919 based at Shoreham-by-Sea, West Sussex.
Split into simpler sentences: Ricardo plc is a British publicly listed company named after its founder, Sir Harry Ricardo originally incorporated and registered as Engine Patents Ltd in 1915. Since 1919 to date, the headquarters have been at Shoreham-by-Sea, West Sussex.