KelderbyPrecision · Est. 1979
Light glowing through the steel-framed windows of an industrial building at night

About a railway arch, then a foundry.

Founded by a toolmaker in 1979, run by his daughter since 2014, and still owned by the family. 142 people in a former foundry on the Tame Valley canal.

Founded
1979, Smethwick
Owner
Kelderby family
Turnover
£21.4m, FY2025
Site
41,000 sq ft, Oldbury
ASince 1979

Our story.

Forty-seven years, three buildings, one name over the door.

  1. 1979A railway arch in Smethwick

    Ron Kelderby, a toolmaker, starts out alone on a second-hand lathe making press tools for local stampers.

  2. 1988First CNC machine

    A three-axis machining centre bought on a five-year loan. The first aerospace order follows in 1990.

  3. 1996ISO 9001

    Formal quality system. Sixteen people, two shifts.

  4. 2004Move to Oldbury

    A 41,000 sq ft former foundry building on the Tame Valley canal, with room to grow.

  5. 2011AS9100

    Aerospace approval and the first 5-axis machines. Harriet Kelderby becomes managing director in 2014.

  6. 2016Sheet metal

    Laser, press brakes and welding added to serve medical and energy customers.

  7. 2019ISO 13485 and cleanroom

    Medical device approval and a 140 m² Class 7 cleanroom.

  8. 2023380 kWp solar roof

    Around a third of our electricity now comes from the roof over the machines.

  9. 2026Lights-out cell

    A second 32-pallet cell runs unmanned through weekends.

Rolled steel coils lined up in a dim warehouse
Every bar has a heat number. Every heat number has a certificate.

Fig. 3 · Material store, bay 2

BLeadership

People you will actually speak to.

  • Harriet KelderbyManaging director

    Second generation. Joined as a setter in 2002 and still reviews every new aerospace quotation.

  • Marek NowickiOperations director

    Runs the shop floor, the schedule and the automation programme. Ex-RAF technician.

  • Dev OkonjoQuality director

    Owns the AS9100 and ISO 13485 systems. Has never once said 'that will do'.

  • Priya SandhuEngineering manager

    Leads programming and process planning. Writes the first program for every new part family.

  • Siân PryceCommercial manager

    The person who answers your RFQ. Will tell you if we're the wrong supplier for the job.

  • Gary WhitlockApprenticeship lead

    Forty years at the bench. Has trained 61 apprentices, 48 of whom still work in engineering.

CEnvironment

Swarf is a resource.

Solar
380 kWp on the roof, around a third of our electricity
Swarf
100% segregated by alloy and recycled, coolant spun out and reused
Coolant
Centralised system with filtration, 40% less concentrate since 2022
Compressed air
Leak surveys quarterly, variable-speed compressors
Scope 1 and 2
−29% per £ turnover since 2019 baseline
Standard
ISO 14001:2015 (Cert. no. EXAMPLE-0004)
Concept by Orderhatch