Optical Test and Calibration Ltd

OTC's Covid-19 Statement

Update (28th May 2020) on measures taken by Optical Test and Calibration Ltd to continue to limit the spread of Covid-19.
OTC’s collection/delivery service will return to normal as of 1st June 2020. All drivers will be supplied with gloves, hand sanitiser and wipes.
If you have special/additional procedures that our drivers need to follow, please advise them on their arrival.
Where collection/ deliveries cannot be accommodated, OTC will continue to support you with the help of UPS and where possible, on completion of the work, return everything on their next business day service.
Following government guidelines, OTC have implemented a ‘Return to Work’ programme following social distancing principles for all workers, while continuing a work from Home strategy for administrative employees, that are able to do so.
You can still contact us through the usual contacts and use the contact form on this site.
We will contact specific customers, where any calibration at a customer’s premises has been arranged, should the situation change.
We ask that, should you need to visit our site, you adhere by our procedures to minimise the spread of the virus.
Should you have any queries regarding the status of our services during this time, please call on 01274 393857.
We will regularly update any changes on our Website.
Thanking you for your understanding and co-operation.

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OTC was established in 1989 and is the UK specialist for fibre optic, light (lux, UV and luminance meters) and electronic calibration holding UKAS accreditation for all three disciplines. Our associated knowledge in the fields of data and telecommunications, RF, electrical, solar, pressure and mechanical calibrations means we can provide a one stop shop service for most customers.

Optical Sensor Testing / Calibration

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Supporting our calibration activities, we now have a range of test equipment available for both sale and hire and all instruments come with the reassurance of OTC calibration before shipment. OTC is an authorised sales and service centre for Fitel (splicers and cleavers), Kingfisher (fibre optic test equipment) as well as selling test equipment by Exfo, Konica Minolta and Shinewaytech

Electrical Testing / Repair

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As well as industry leading one-week turnround on in-house calibrations, we have countrywide collections, a team of experienced repair technicians, knowledgeable customer support, subcontract management, UKAS and ISO9001 accreditation all designed to make your calibration trouble free


Specialists in Calibration, Service, Repair and Sales of Fibre Optic, Electrical, Electronic and Photometric Test and Measurement Equipment.

  • In-House calibration/certification: Standard 5-day turnaround with 2-day premium service available on request.
  • UKAS accreditation in these principle areas - Fibre Optic, Electrical, Photometric and UV.
  • BS EN ISO IEC17025 accredited laboratory.
  • Quality management system BS EN ISO 9001 registered.
  • Direct traceability to SI units via primary standards at NPL , LNE and other acceditated laboratories.
  • Collection and Delivery service available via OTC transport for large areas of the UK.
  • Complete inventory management available, if required.
  • Automatic recall system to reduce administration costs of maintaining your calibration database.