He was born in Preston, Lancashire and was educated at Lancaster Royal Grammar School.
[1] With the conclusion of his studies, Westley joined Gloucestershire later in the 1969 English cricket season, making his first-class debut for the county against Glamorgan.
[5] He taught during the winter months, but with opportunities proving limited at Gloucestershire, he decided the leave the county and become a full-time teacher.
[8] In 1976, he played his final first-class match for the Minor Counties against the touring West Indians.
[6] He later became the head of the Association of Governing Bodies of Independent Schools, a role he presently holds.
[6] Westley attended Lancaster Royal Grammar School with his twin brother, Roger, and both played for Oxford University in first-class cricket, one of the few times twins have appeared together in first-class cricket.