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About

Tamar Telecommunications head office.

Tamar Telecommunications head office.

Tamar Telecommunications® is a trading name of Kalnet4u Ltd, trading since March 2002 and incorporated as a limited company in February 2003.

In 2011 Tamar Telecommunications® became a network operator in its own right. We provide a range of business telecom products and services designed and managed by our in-house team of technical engineers. Our services are constantly evolving to meet the needs of the modern day business. Our core services are the provision of 0800 numbers, 03 Numbers and local geographic numbers (virtual landline numbers) for over 650 UK towns and cities.

We have been providing telephone numbers for businesses for over 14 years and believe that our numbers and services can make a real difference to your business.

Over the years we have built up a large loyal customer base made up of small businesses, local councils, national charities and large corporate companies employing thousands of staff around the world. As a company we can adapt our approach to suit the sole trader through to the large corporate clients for whom we provide a dedicated account manager. Many of our new customers come to us from referrals from our existing customers recommending our services to them.

Richard in customer services.

Richard in customer services.

Our bulk buying power means that we can offer some of the best rates and services in the industry. Our team of highly trained staff are on hand to offer support by telephone, email and online. We will always do our utmost to help you.

We believe in offering fast and efficient customer service and usually reply to emails within 2 working hours and answer telephone calls within two rings during our office hours of 9am – 5.30pm, Monday to Friday. Our customers have come to expect a fast and efficient response and this we aim to provide to all our customers.

Over the past three months, 97.02% of calls we received were answered within 10 seconds.

What our customers say…


Very happy with the level of professionalism

Spoke to Darren and was very happy with the level of professionalism and customer care. Thus far I could not fault Tamar and would be happy to recommend the company to others.

M Hunt


Proved very worthwhile

I was very pleasantly surprised how quick & easy it was to obtain my new number, as I have only used my mobile since starting my business. The thought of getting a landline from BT, was quite daunting, which I haven`t pursued. So contacting Tamar today via a work colleague has proved very worthwhile.

L Moodley


Highly recommended

Just wanted to say how pleased we are with the service that we got from you today and every time we make contact with you. Everything that your company is asked to do, they do it with ease, your service should be highly recommended and your employees should be told how fantastic they are!

We feel that everyone will make complaints, but hardly anyone will thank companies for how good they are.

We would just like to Thank you for a wonderful service, that you provide.

Les and Sue B
See more testimonials

If you are looking for a new service provider why not give us a try?

Company Details

Full Company Name: Kalnet4u Ltd t/a Tamar Telecommunications®.
Company Reg. Number: 4655311
VAT Reg. Number: 812 4081 65
Data Protection Act. Reg. Number: Z7785470
Registered Company Address: 19 Research Way, Derriford, Plymouth, PL6 8BT
Tamar Telecommunications is a registered trademark of Kalnet4u Ltd.

Tamar Telecommunications® supports the 1000 Club Campaign, whose aim is to recruit 1000 companies in the Plymouth area to commit to support young people into employment, whether that be through work experience, apprenticeship, graduate internships or employment.