Simon Jeffes (Crawley, UK, 19 February 1949 – 11 December 1997) was an English classically trained guitarist, composer and arranger. He formed, and was the core performer of, the Penguin Cafe Orchestra. He composed the ballet Still Life at the Penguin Cafe. According to Robert Sandall, on the official Penguin Cafe Orchestra website, Jeffes died of an inoperable brain tumor in December 1997.
He is also known for assisting Sex Pistols producer Bill Price with the string arrangement for the now legendary Sid Vicious version of “My Way” which reached #7 on the UK singles charts as part of The Great Rock 'n' Roll Swindle soundtrack. Since his death, an enduring work of his, "Music for a Found Harmonium," has enjoyed great welcome at pubs and concerts where strings and percussion join in folk music.