Planning for an SD WAN future

Download our latest guide to discover how the market for SD WAN services is evolving

Planning for an SD WAN future

Download our latest guide to discover how the market for SD WAN services is evolving


Download guide

You deserve the Colt experience

We power better experiences,
which is why our net promoter
score is industry-leading.


Find out more

When connectivity matters, choose Colt


Connectivity matters, so you need
a partner you can trust. Fast, secure
& intelligent.


Find out more

Check your connectivity

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We connect organisations around the world so that they can make a difference to people everywhere.

We challenge standards of customer experience in the telco world where others can't keep the pace. Our Net Promoter Score of 69 is industry-leading and we build intelligence into everything we do.

Why? Because we know that connectivity delivers the moments that matter.

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Solutions that power digital transformation


Connect to cloud service providers

Enable intelligent, scalable connectivity to the cloud, in minutes. Read more...

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Connect your enterprise network

Empower your digital transformation journey through change.

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Build your core network

Meet demand for secure, high-performance, high-bandwidth connectivity.

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Transform your digital workplace

Optimise productivity and collaboration with work from anywhere.

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Keep your business secure

Protect your data and network with next-generation cybersecurity.

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Connect your business On Demand

Take control of your network and scale to meet demand in near-real-time. Read more...


Connect to financial markets

Enable trading success with secure, low-latency networking and exchange. Read more...

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Connect your voice services

Evolve your voice and UC (unified communications) infrastructure.

What makes us different?

Colt is your one-stop-shop for network and voice services, delivering a harmonised service portfolio, customised to suit your business:

Our comprehensive SLAs provide targets for service delivery, availability and time to settle payments - all supported by competitive guarantees 

Our award-winning customer service is backed up by some of the best Net Promoter Scores in the industry

We are recognised by more than 100 independent industry awards and counting

Our On-Demand services provide fast delivery, network agility, cost reductions and price flexibility 

A bit about us...

Colt smashes NPS target with industry-leading score

Colt ended 2019 on a high with its best-ever Net Promoter Score (NPS) of 64 points in Europe. In Asia we closed the year on 26 points. Both these scores are truly industry-leading, with Satmetrix 2019 B2B benchmarking the EMEA and Global Telecoms sector at 15 and the Asia Telecoms industry at just four.

Colt powers Illuminated Rivers through London

The Illuminated River Foundation was set up to transform the River Thames into a ribbon of light that weaves it way through the heart of the city at night. Four of its bridges — London, Cannon Street, Southwark and Millennium — were illuminated in the first phase of the project in July 2019. Five more bridges will be lit in Spring 2021, creating the world’s longest public artwork (3.2 miles) that will be viewed 90 million times a year over 10 years.

Colt emerges as a Strong Performer in The Forrester Wave for SD WAN Services

Since launching in 2016, Colt SD WAN has led the way in innovation in managed WAN services. Combining the scale of the Colt IQ Network with an expansive set of features, Colt continues to grow its market-leading solution, releasing several significant new features this year to empower customers to accelerate their digital transformation and embrace change.

"The Colt infrastructure is robust, Colt controls it end-to-end, and we get excellent support from our account and service managers who really understand our business."

Amanda Thomas

VP Telecoms EMEA, Intercall

"The overall evaluation of the service received is positive in two ways: first, due to the technical quality of the product in terms of its strength, consistency and security, and second, in terms of the advice and assistance received during both the pre- and post-sales stages."

Javier Bartolome

Technology Director, IMSolutions

"Colt has been a real partner throughout the years we've been working together, always ensuring that its services have kept pace with growth in our business. The people I deal with directly at Colt understand my needs. We have a smooth, efficient relationship."

Marc Conte

SVP of IT, Louvre Hotels

"We know that Colt focuses on enabling its customers to meet their goals, rather than purely technological aspects of any project. This philosophy fits excellently with the service understanding of the [Berlinale] festival"

Dieter Kosslick

Director, Berlinale