

About Us
Optimal Calibrations Limited is one of the leading UK calibration experts, based in Bristol. Our calibration laboratory is equipped with an impressive range of equipment, and our highly trained calibration engineers in Bristol bring a wealth of experience across all disciplines. We provide comprehensive, full-spectrum UK calibration services to support your business in delivering products and services efficiently and on time.
Our services include both off-site and on-site calibration services in Bristol, helping you reduce operational costs while enhancing quality and turnaround time. In addition to our laboratory facility, we proudly offer on-site calibration in Bristol, allowing us to deliver precise calibration services directly at the client’s premises. This minimizes downtime without compromising the high standards our customers expect.
Our strategy is to offer an all-encompassing solution—covering every aspect of calibration, repairs, and the supply of equipment—ensuring you receive a seamless and trusted service from the UK’s top calibration professionals.

Calibrations
Our comprehensive range of calibration equipment enables us to meet all your calibration requirements through our team of highly trained calibration engineers in Bristol. Underpinned by efficient procedures, our clients benefit from UK calibration services that reduce lead times and manage costs effectively.
We operate from our laboratory located in Bristol, providing a convenient Collection & Delivery service to make your on-site calibration in Bristol and off-site calibration needs as easy and efficient as possible. Our laboratory is ISO 9001:2015 accredited to provide traceable calibration to all relevant standards, giving you peace of mind when choosing trusted UK calibration experts.
In addition to calibration, we also offer instrument sales, servicing, and repairs. Small repairs and adjustments are made at the point of calibration where possible, ensuring you are without your equipment for the shortest possible time.
For businesses seeking a streamlined approach, we offer a fully managed service that allows you to focus on your daily operations. Our team handles every aspect of your calibration and inspection equipment—from the identification of assets and monthly collection of recalibrated tools, to the on-site calibration services in Bristol and certification of all quality verification equipment used across engineering and manufacturing environments.

Why Choose Us
At Optimal Calibrations Limited, we pride ourselves on delivering exceptional UK calibration services tailored to your unique needs. As UK calibration experts, our Bristol-based laboratory is outfitted with state-of-the-art equipment and staffed by experienced calibration engineers in Bristol proficient in all disciplines. This ensures that we provide comprehensive, accurate measurement services that enhance the efficiency and timeliness of your product and service delivery.
We offer flexible solutions, including on-site calibration in Bristol, which minimizes downtime by allowing us to work directly at your premises while maintaining our high standards. Our on-site calibration services in Bristol are designed for convenience without compromising quality. Whether you require scheduled maintenance or emergency response, our on-site calibration Bristol team is ready to support your operations.
Our all-encompassing strategy includes every aspect of calibration—from equipment repairs to the supply of tools—ensuring a seamless and cost-effective experience for our clients. By choosing Optimal Calibrations Limited, you benefit from our commitment to quality, reliability, and customer satisfaction, making us the trusted partner for all your calibration needs.
Quality Assurance
The management of Optimal Calibrations Limited, recognised as leading UK calibration experts, provides the highest possible standards of quality for its services and products. We are dedicated to maintaining a quality management system that ensures our UK calibration services and products meet customer specifications within agreed parameters of cost, quality, and delivery, in accordance with the company’s strategic direction.
This commitment is supported by our team of experienced calibration engineers in Bristol, who play a vital role in maintaining quality through precision and technical excellence.
This is achieved using Key Performance Indicators to measure conformance to the above criteria and using this information as a driver for continuous improvement throughout the company.
The company’s quality management system concentrates on error prevention by investigating processes, identifying errors and opportunities for errors, and implementing corrective and preventive actions to correct and avoid such occurrences.
Quality Assurance
The management of Optimal Calibrations Limited provide the highest possible standards of quality for its services and products and are dedicated to maintaining a quality management system, which ensures that its services and products meet customer specification within agreed parameters of cost, quality, and delivery, in accordance with the company’s strategic direction.
This is achieved using Key Performance Indicators to measure the conformance to the above criteria then using this information as drivers for continuous improvement throughout the company.
The company’s Quality management system concentrates upon error prevention, by investigating processes, identifying errors and opportunities for errors, and implementing corrective and preventive action to correct and avoid such occurrences.
Quality Assurance
The management of Optimal Calibrations Limited provide the highest possible standards of quality for its services and products and are dedicated to maintaining a quality management system, which ensures that its services and products meet customer specification within agreed parameters of cost, quality, and delivery, in accordance with the company’s strategic direction.
This is achieved using Key Performance Indicators to measure the conformance to the above criteria then using this information as drivers for continuous improvement throughout the company.
The company’s Quality management system concentrates upon error prevention, by investigating processes, identifying errors and opportunities for errors, and implementing corrective and preventive action to correct and avoid such occurrences.
Equipment

Occasionally we identify a problem with a client’s equipment as part of our service provision. This might be as part of advisory support or a one-off service, where we have identified a capability or capacity gap whereby a new piece of equipment will empower our clients to better deliver their core product or service. We can source any calibration or measurement equipment, from simple gauges to a complex measurement system. Whether you need calibration equipment in Bristol or advanced tools sourced nationally, we focus on performance, best return on investment, and lifetime project costs.
Repairing or Replacing Equipment
This also includes the repair or replacement of customers’ existing calibration and measurement equipment when it has been identified that the current equipment is not fit for purpose. Our expert team specialises in measurement equipment repair in Bristol and offers comprehensive equipment calibration and repair in Bristol, ensuring you get back to work quickly and efficiently.
We explore the available options for calibration and repair of equipment in the UK, including the cost and feasibility of repairing the item or replacing it altogether. For electrical systems, we also provide specialized electrical equipment calibration services, maintaining accuracy and compliance across your instruments.
As a trusted provider of Bristol measurement equipment repair, we communicate all findings and solutions to the customer as soon as possible to minimise equipment downtime. Once we receive authorisation for the repair or replacement activity, our customer service team manages the entire process and provides a delivery date for the returned calibrated equipment—so you know exactly when core activities can resume.
To benefit from a calibration and measurement partner underpinned by a hugely experienced, technically strong team with a history of improving quality, consistency, and performance, contact us.