Online Engineering Systems Ltd
Direct employees
Turnover (reported)
Regional Markets
Asia, Europe, North America
Nuclear Contracting Tiers
Tier 4: Sub-component Suppliers/Distributors

"A Supplier of High Quality Precision Machined Components "

Online Engineering has been a trusted supplier to our business for nearly 20 years, providing high quality precision machined components for Aerospace, Defence, Pharma and automotive sectors. Their quality of works has always been excellent with rapid turnaround times where necessary.
I would have no hesitation in recommending this company

Mecelec Design Limited



  • ISO 45001:2018
  • ISO 9001:2015

Online Engineering Systems Ltd

Precision Machining

CNC precision machining, CNC milling,CNC turning,Assembly,General machining


Specialists in tight tolerance precision machining for complex parts in one-off and small / medium runs.
Highly skilled, committed, and experienced workforce in Mill/Turn CNC machining up to full 5-Axis. Development & prototype work in all types of materials with support for EDM, welding, grinding, bending, finishing & application of paint, surface & heat treatments via third party approved suppliers.
Assembly services (including electronic, electrical & Mechanical) enable us to deliver complex components, full assemblies, sub-assemblies and individual parts.
All operations overseen by an experienced, dedicated team working to ISO 9001 UKAS accredited QMS with full ISO 45001 accredited OHSMS.
Our clients include, but are not limited to: major petrochemical, automotive, automation & aerospace companies, you can expect Online Engineering Systems ltd to provide an efficient & cohesive service from conception to delivery – Our aim is always Quality, On-time & On-budget”.

Products and Services

Product Sector
Precision & General Machining Oil & Gas including LNG
Precision & General Machining Subseas and Offshore
Tooling Equipment Oil & Gas including LNG
Mechanical & Electrical Engineering (M&E) Oil & Gas including LNG
Precision & General Machining Oil & Gas including LNG
Precision & General Machining Aerospace - Civil and Defence
Precision & General Machining Nuclear Civil
Precision & General Machining Nuclear Defence - Naval Marine
Precision & General Machining Rail & Transport

Online have a dedicated inspection department with an extensive range of measuring equipment. This helps to ensure products meet customer specifications and drawing requirements, by means of in process inspection, 1st off approval and Final inspection. First Article/Sample reports are available on request, for customers verification purposes
All equipment is maintained and calibrated in line with ISO9001:2015

Site Facilities

Shop Floor

400m2 Premises within "M5" corridor. Located less than a mile from junction 13

Specialist Machinery

Capability Swing Length Width Weight
5 Axis Milling 18000 max spindle speed Min: - - - N/A
Max: - - 500mm -
Horizontal Mill / TurnBar Feed Min: - - - N/A
Max: 696mm - 380mm -

Recent Work

Mecalec Ventilator Project

At the peak of the first wave of the COVID 19 pandemic, we were approached by one of our long-standing customers who had an idea to see if it was possible to use some of their off-the-shelf automotive products as the core for a new ventilator design.
Working with the customer and some of our key partners, the first prototype was produced within 10 days, with the first beta production unit being manufactured 4 weeks later. The Online team worked around the clock to meet extremely tight production deadlines.Further development continued for 4 months after this, adding additional improvements to the valve system and the user interface.
The ventilators function was fully approved by a consultant anaesthetist from Worcester General Hospital

Mecalec Ventilator Project