Products and services

Time and frequency

A reliable source of timing and synchronisation standards and services

As the UK's home of precise time and frequency measurement, NPL offers a range of services providing access to a reliable and trusted source of time.

Frequency standards are key to the dissemination of high-accuracy time services to UK science, technology and industry. They ensure compatibility with international timescales through worldwide time transfer and clock comparison. Methods for comparing geographically separated clocks and frequency standards are vital for the development of improved standards, generation of the international time scale and provision of services to UK industry.

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What we do

NPL operates the national time scale UTC(NPL) and the UK primary frequency standards, and uses these to contribute to global timekeeping. We also disseminate accurate time and frequency to users across the UK, via services such as the MSF radio time signal, our internet time service and NPLTime®.

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We’re here to help

Still struggling to work out what you need? We pride ourselves on giving sound technical advice to guide you. By combining expert advice, standard tests and bespoke consultancy, you can be confident in our approach.

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Find out more about our expertise in this area, and how we are creating impact from science and engineering.

Case study

Delivering trusted time for UBS infrastructure via NPLTime®


Establishing high-accuracy time measurement for optical atomic clocks


Work with us

Our research and measurement solutions support innovation and product development. We work with companies to deliver business advantage and commercial success.
Contact our Customer Services team on +44 20 8943 7070