Mornington Edward Lockett was born in Stepney, London, United Kingdom on November 19, 1961. He began playing clarinet at the age of 14 while he was a student at Cowes High School, then switched to tenor saxophone. He studied at Dartington College of Arts, graduating in 1981, then undertook further study at the Guildhall School of Music and Drama in 1984–85, under the tutelage of Lionel Grigson. 

In the Eighties and ‘90s Lockett played in the bands of Jim Mullen, Ronnie Scott, Arturo Sandoval, Ian Shaw, and Andrea Vicari. During the mid ‘90s into…