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Contact us

Tamar Building - About Us

We are open from 9am to 5.30pm Monday to Friday (excluding public holidays) and can be contacted in the following ways.

By Telephone

0800 772 0000 free to call from UK landlines and mobiles.

Over the past three months, 98.10% of calls we received were answered

By Email:

To contact us via email, please use the most relevant email address below.

Where the enquiry relates to an account or telephone number, please include these details within your email.

Sales enquiries:

Billing enquiries:

Technical support:

Customer services:

We aim to respond to emails within two working hours.


By Post:

Tamar Telecommunications®
19 Research Way

Existing customers can pay invoices online and access the online control panel to manage their numbers.


© 2021 Tamar Telecommunications - ‘Tamar’, ‘Tamar Telecommunications’ and the marble device are registered trademarks of Kalnet4u Ltd.

Kalnet4u Ltd. T/A: Tamar Telecommunications. Registered in England – Reg No 04655311. Registered Office: 19 Research Way, Derriford, Plymouth, PL6 8BT