Ronald Gregory, (23 October 1921 – 9 April 2010) was a British police officer who served as chief constable of West Yorkshire Constabulary from 1969 to 1983. He was head of the police force during its five-year manhunt for the 'Yorkshire Ripper' (i.e. Peter Sutcliffe).
Having been born in Preston, Lancashire, Gregory served in the Royal Air Force Volunteer Reserve and the Fleet Air Arm, Royal Naval Volunteer Reserve during the Second World War. Having returned to civilian life in 1946, he served as a police officer and detective in his home town of Preston. In 1962 or 1963, he was appointed deputy chief constable of Blackpool. He was then chief constable of Plymouth City Police before becoming deputy chief constable of the newly created Devon and Cornwall Police. In 1969, he became chief constable of West Yorkshire Constabulary, where he would spend the rest of his career.
Early life
Gregory was born on 23 October 1921 in Preston, Lancashire, England. He came from a family of policemen: his father, grandfather and great-grandfather had been officers. He was educated at Harris College, known for its vocational and technical courses.
Military service
In 1942, at the age of 20, Gregory volunteered to join the Royal Air Force Volunteer Reserve (RAFVR) to serve in the Second World War. He then underwent aircrew training in South Africa. On 18 December 1943, having reached the rank of leading aircraftman, he was granted an emergency commission as a pilot officer on probation in the RAFVR. On 18 June 1944, his commission was confirmed and he was promoted to flying officer (war substantive).
He transferred to the Fleet Air Arm as an officer of the Royal Naval Volunteer Reserve (RNVR) on 21 November 1944. He was granted the rank of temporary sub-lieutenant (A) with seniority from 18 December 1943. With the RNVR, he saw active service in the Far East. He flew Hellcats and Corsairs while being based on the aircraft carriers and . In July 1945, he was shot down over Phuket Island by the Japanese: after an emergency landing offshore, the injured Gregory swam out to sea while under heavy fire, before being rescued by a Walrus flying boat. He was demobilised in 1946.
Police career
Gregory began his policing career as a police cadet with the Blackpool borough force before joining Preston borough police as a constable in 1941. After completing his probationary period, he left the police to serve in the military for the rest of the Second World War. He was demobilised in 1946 and returned to Preston to continue his police career. He became a detective, and rose through the ranks of CID until he was a detective chief inspector.
In 1962 or 1963, he became a chief officer, having been appointed deputy chief constable of Blackpool. He became chief constable of Plymouth City Police in 1965. However, only two years later, the city police was merged with its neighbouring forces into Devon and Cornwall Police; he became deputy chief constable of the new force in 1967 or 1968.
In 1969, Gregory began his final police appointment: as chief constable of West Yorkshire Constabulary. Due to government restructuring, the city constabularies of Leeds and Bradford were merged into the wider county force in 1973, enlarging his constabulary and remit: this new force was called the West Yorkshire Metropolitan Police. This amalgamation created tensions and split loyalties throughout the force in the early years, and were cited as a major cause of issue relating to the hunt for the 'Yorkshire Ripper'. He introduced a number of innovations to the force, including armed response mobile units, VASCAR speed detectors in patrol cars, and a motorway patrol unit.