Thomas Brown Engineering

01484 548 903

Company overview

Thomas Brown Engineering Ltd is a subcontract, precision machining company that manufactures precision made components to the highest standards and are approved to quality standards ISO9001:2015 and AS9100D.

We specialise in high precision CNC turning and CNC milling, offering the rail industry a complete and bespoke precision component manufacturing service from conception to completion.

Thomas Brown Engineering was established in 1982 by Tom Brown, who is still our Managing Director today. We are an independent, family run company that is proud to deliver the very best British made, precision engineering.


Precision Machining

Precision CNC machining is what we do here, working with you to identify your precision machining requirement and delivering on your requirement.

We have a reputation for quality and reliability as our expertise, facilities and capabilities mean that we can deliver a comprehensive precision machining service across the UK. We can manufacture parts in materials including stainless steel, aluminium, cast alloys, plastics and exotics. With component parts produced either on an individual order basis, as a scheduled delivery or as a Kan-Ban system. We can supply parts as assemblies, delivered direct to your production line and eliminating your inspection and stocking costs.

If CNC Turning to tight tolerance is your requirement then we can certainly help.


  • Nakamura WY-250 multi axis turn mill lathe 65mm capacity.
  • Nakamura NTJ 100 B axis turn mill lathe 52mm capacity. (Seen here)
  • Doosan 250mm dia x 60mm bar.
  • Victor 550 chucking x 2100 centre 91mm through spindle.
  • Emag VL5 vertical chucking auto feed 200mm o/d 120mm long C axis.
  • Star 7 axis 32mm sliding head lathe.
  • Star 9 axis 20mm sliding head lathe.
  • Star 10 axis 12mm sliding head lathe.

If you are looking for CNC Milling then we can certainly help.


  • Brother Speedio M200X3 Multi-Tasking Machining Centre with Feedio robot loading.
  • Mikron HPM 450U full 5 axis milling 450mm cube capacity, 7 pallets, 60 tools, 20,000 RPM.
  • Mikron MILL E 500 U 5 axis milling 500mm cube capacity, 7 pallets, 60 tools, 20,000 RPM.
  • Mazak Horizontal Milling Centre 500mm twin pallet, 120 tools, 20,000 RPM, probing.
  • Hardinge XR760 4 axis 12000RPM x 760mm, Y 610mm, Z 590mm, probing.
  • Hardinge XR1000 4 axis 12000RPM x 1020mm, Y 610mm, Z 570mm, probing.

Technical Advice and Prototype Development

We offer you a complete and bespoke service from conception to completion for precision made parts.

An important part of our mission is to deliver “trusted technical support,” alongside our components. All of our customers rate our technical support as excellent or good (according to our 2020 customer satisfaction survey) and are safe in the knowledge that their projects are well managed by our highly skilled staff.

The technical and quotations department is here to solve your technical issues and develop cost efficient strategies to meet project requirements. Producing full working drawings on Inventor software to your requirements. Our team works closely with our production department to formulate and offer solutions that achieve maximum cost effectiveness in the production of precision components.

Inspection and Quality

Quality is central to everything we do and everyone is responsible for ensuring our service and manufactured parts are of the quality our customers expect.

We have a dedicated inspection department, led by our Head of Quality, Kris, and all of our team is trained to ensure that we adhere to our quality standards AS9100 rev D and ISO9001:2015.

We have an extensive range of equipment and software within our Inspection Department, including:

  • IPI Visual Fair software for ballooning drawings and first articles. CMM and Pen data input.
  • Mitutoyo Geo Cat 1000 3D inspection software.
  • Mitutoyo Roundness Testing Machine.
  • Mitutoyo Surface Measuring Machine.
  • Tesa Height Gauges.
  • Hardness Rockwell Tester.
  • Optical Profile Projector.
  • Vibro and roll etching tools.
  • Fibre-optic Bore scopes.
  • Surface thickness measurement.
  • Tool setting optical scope.
  • Sylvac Scan Optical Measuring Machine.

Tool Room, Grinding and Additional Services

Tool Room capabilities:

  • Manual turning.
  • Manual milling.
  • Electro Discharge machining.
  • Assembly and fitting.
  • Grinding.

Grinding capabilities:

  • Cylindrical grinding 250mm dia x 680mm.
  • Grinding Surface Table 600mm x 300mm.
  • Dedtru centreless and profile grinding.
  • Honing.

Additional services:

  • Finishing operations including painting, plating, anodising, coating and polishing,
  • Heat treatment including hardening and stress relieving.
  • Our components can be engraved, stamped or marked as required.
  • Protected and suitably packed to customer requirements.

Accreditations & Affiliations