In 1947, the SPG development program was approved by the British government. Several variants based on the Centurion were proposed. One of them featured a 140-mm howitzer. Two prototypes were built in 1957. In 1960, development of the SPG was discontinued. The vehicle never saw service.
Time for the successive autoreloading of each shell into the magazine.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.