About
At Joseph & Jesse Siddons, we are committed to delivering high-quality Grey & SG Iron castings with a right-first-time approach and a target of 0% defects.
Based in West Bromwich, our foundry combines traditional expertise with modern manufacturing technology, ensuring we remain a trusted supplier to UK and European customers.
With extensive facilities and deep industry knowledge, J&J Siddons is positioned to deliver highly cored, precision-engineered Grey & SG Iron castings for some of the most demanding sectors.
Throughout the process, we are your partner in strength, precision, and reliability.
Flexible & Scalable Manufacturing
Our versatile production methods allow us to manufacture a wide range of castings, from pumps and compressors to clutch housings and filter casings. With a production capacity of 3,000 tonnes per year, we can handle low-volume bespoke work as well as high-volume repeat batch production.


Investment in the Future
A stable financial foundation and continuous investment in new technology enable us to offer long-term supply continuity. We prioritise service, quality, speed, and flexibility, ensuring we meet the high technical standardsdemanded by our customers.


Trusted expertise
With over 175 years of experience, we combine specialist knowledge and modern manufacturing to deliver high-quality Grey & SG Iron castings.
Invested for the Future
Still family-owned and run by 5th and 6th generation of the Siddons family, we have invested over £4 million in upgrading the plant and equipment over the last 5 years to ensure efficient production and the long-term future of the foundry.
Quality Castings
Certified to ISO 9001 and Lloyd’s Register approved, our castings are engineered for reliability, ensuring long-term integrity in mission-critical applications.
Let’s Talk Castings
Get in touch to explore our capabilities and find the right solution for your needs.
T : +44 (0)121 556 0218
E : [email protected]