Sidney John Kean was born on October 1 1950 in London, UK. Sidney's career has spanned over five decades and has included extensive work in the theatre, most recently in the acclaimed productions of Girl From The North Country at The Gielgud Theatre, London directed by Conor Mcpherson, and The Berberian Sound Studio at The Donmar Warehouse, London directed by Tom Scutt, cinema, television and radio.

Naturally, he is equally at home in all these different fields. He is especially gifted at picking up accents and dialects from around this country and the rest of the world and making them sound natural and native. It was in the Reps and National Tours that he learn't the art of "deliberately staying there, watching and listening to other performers".