- The Billericay School Studio Orchestra's very own Website. Billericay School is situated in Billericay, Essex, a small town about 50 Kms from London, England. It has around 1500 pupils and for eleven years the Orchestra has been under the leadership of the current music department head-Mr. John Stevenson. Since this time the Studio Orchestra has played at many venues in Britain and Europe, ...www.swilkinson.demon.co.uk