Caldicot & District Gas Light & Coke Co. Ltd. was formed c1908 when the gasworks was described as 'not yet ready to make gas' (30/9/1908). In 1915 Annual gas production 6,250,000 cu.ft.. of 15cp gas (14cp prescribed), they had 310 consumers, of whom 260 had slot meters and 271 had stoves, George Winstanley was the Chairman and J. L. Rust was the Manager & Secretary. The company came under the control of the Severn Valley Gas Corporation in the 1930s. In 1935 J. F. Rust, son of the late John Luff Rust, was reported to be Chairman of the Caldicot Gas Company, while Engineer of the Newport Gas Co. (Gas Journal 20/11/1935) However, the Gas Journal of 25/2/1948 reported that J. F. Rust had been elected a Director of Monmouth, Chepstow, and Caldicot Companies, while already a Director of Ross and Cowbridge (all presumably Severn Valley appointments). Caldicot was supplied from Newport, with coke oven gas. The gasworks were visible on the 1919 to 1972 OS maps. Gwent Record Office holds the records of the Monmouth, Caldicot and Chepstow Gas Companies Records, ref: GB 0218 D514.