Precision engineering 5-Axis CNC

About Us

ADM is a subcontract precision engineering company serving a range of key industry sectors, such as: Aerospace, Defence, Oil & Gas, Hydraulics and Commercial. Our continuing investment in 5-Axis CNC Machining together with our solid reputation for on time delivery ensures that we continue to be the preferred choice for our clients’ complex and demanding CNC machining and assembly projects. ADM operate from 7,500 square foot premises, located on the south coast between Chichester and Brighton, with direct access to the country’s motorway network and Gatwick Airport.



The origins of ADM can be traced back to 1996 when founded as a partnership before being incorporated as ADM Engineering Limited in March 2000. Now, as an established and trusted supplier to some of the UK’s most prestigious OEM’s and their tier one supply base, our ability to manufacture the most complex, close tolerance machined components, and assemblies gives our customers the confidence to include ADM in the design phase at the very outset of new projects. In March 2016 ADM relocated to Littlehampton, West Sussex and subsequently changed the name to ADM Precision Engineers Limited. In the following months ADM consolidated all operations into the Littlehampton facility.



From our manufacturing base in Littlehampton, West Sussex, ADM continue to develop and refine our high precision engineering capabilities, to ensure that we continue to be a strategic partner in the engineering supply chain. Our full-service offering extends from precision machining to complex assemblies, encompassing a wide range of disciplines such as; pressure testing, tensile strength testing, various heat treatments, chemical coating, painting, welding, ultrasonic cleaning and serial number part marking for future product traceability.

Our continued investment in new systems, training and technology, will enable us to develop our business to meet the ever-changing demands in the industry sectors we serve, making ADM the natural choice for many.



To ensure our ongoing quality performance, all components are manufactured within the guidelines of internal procedures. These procedures are constantly reviewed as part of ADM’s strategy for continual improvement. Quality is monitored throughout the production lifecycle from initial contract review to final inspection. Our Quality Department’s highly- experienced professionals are supported by an extensive range of regularly-calibrated measuring equipment. We appreciate that our customers are committed to improving quality over the whole life cycle of their products and ADM will remain proactive in our commitment to supporting their on-going needs.


Machining exotic materials is nothing new to ADM; we have consistently supplied complex machined valves, end caps and manifolds into the oil & gas sector for several years. Having established strong relationships with the best UK tooling suppliers – and by collaborating with their technical application engineers – we have performed machining trials on various exotic materials, using the latest technology cutting inserts.

ADM has a proven ability in machining exotic materials such as; Inconel, Hastelloy, Super Duplex, Nimonic, Monel, Titanium, Peak plus many more.

Machining direct from forgings, billets, bars and castings, all material is fully traceable to customer specification.


We are committed to reducing the impact of our operations on the environment and we embrace new technologies as an integral part of our business strategy. We continue to challenge what we do to improve our environmental performance.


The Shareholders and Directors of ADM are committed to uphold both their legal and moral obligations by providing a safe working environment for staff and visitors. View our Safety Leaflet …



View our Plant List sheet PDF …



View the ADM Company Brochure …

ADM Brochure


Our Mission is clear; to achieve and maintain recognition as a leading provider of complex CNC machined components and assemblies through the application of the latest technology and training, whilst providing an environment that promotes the pursuit of excellence to the benefit of our customers, employees and shareholders alike.

“On Quality … On Time … On Budget”

Managing Director – System 910 (Hydraulics) Ltd.