Comparing: Bishop vs. 105 leFH18B2 vs. SU-122A

Developed on the basis of the Valentine tank. The standard turret was replaced by a stationary box-shaped cabin that featured a 25-pounder howitzer. Due to the low gun elevation angle (15 deg), the maximum firing range was only 5,800 m, which is only half as long as its firing range in the towed state. The SPG saw combat in North Africa, Sicily, and South Italy. According to various sources, a total of 80–100 vehicles were produced.

Heavy B1 tanks captured by the German army during the French Campaign underwent modification and were actively used by the Wehrmacht. Some vehicles were converted into SPGs, designated 10.5 cm leFH18/3 auf Geschützwagen B2 (f).

A proposed 122-mm SPG on the basis of the SU-76. No prototypes were built.