ISO 27001 Accredited  

27001 RGB WhiteRecognised all around the world, ISO 27001 is one of the most popular information security standards in existence. It sets out the policies & procedures needed to protect data and manage sensitive information. The specification includes details for VTSL's documentation, management responsibility, internal audits, continual improvement, and corrective and preventive action. The standard requires cooperation among all sections of an organisation, and VTSL is proud to be ISO 27001 accredited. VIEW CERTIFICATE >


9001 RGB WhiteVTSL is ISO 9001 certified by the British Assessment Bureau. ISO 9001 is a quality management standard awarded to organisations who have proven to demonstrate a consistently high level of service. ISO 9001 standards are based on seven quality management principles that senior management can apply for organisational improvement. VTSL had to demonstrate competence in each of these areas as well as show documented quality measurement metrics and operational procedures. VTSL has been certified since 2016. VIEW CERTIFICATE >

2018 ITSPA Awards Finalists

ITSPA Awards Finalists VTSLThe Internet Service Providers Association (ITSPA) is the preeminent industry organisation for IP business telephony providers. Each year they host the prestigious ITSPA awards, in which the best of the best are selected as leaders across a variety of categories. VTSL was chosen as a Finalist for two categories in 2018 - The Best Business Internet Telephony Service Provider & The Best Multi-National Solution Provider.

2017 Best Business VoIP Provider


In 2017, VTSL was named the Best VoIP Provider in the UK for medium-sized businesses after rigorous evaluation for the prestigious Internet Telephony Service Providers Awards. VTSL competed against all the major VoIP companies, including corporations such as Ring Central. 

ISO 14001 Accredited 

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VTSL is proud to be ISO 14000:2015 accredited. ISO 14001 is internationally recognises as providing the benchmark for best-practice standards related to environmental management- ensuring organisations (a) minimize how their operations  negatively affect the environment (i.e. cause adverse changes to air, water, or land); (b) comply with applicable laws, regulations, and other environmentally oriented requirements; and (c) continually improve in these respects.


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VTSL is a member of Ofcom, Linx and RIPE NCC. 

Ofcom is the UK government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom.

The London Internet Exchange (LINX) has over 800 ASNs connecting from over 75 different countries worldwide, meaning members of The London Internet Exchange (LINX) have access to direct routes from a large number of diverse international peering partners. Using LINX allows a reliable exchange of traffic with increased routing control and improved performance.

RIPE NCC is one of five Regional Internet Registries (RIRs) providing Internet resource allocations, registration services and coordination activities.


FFEA Finalist

VTSL are proud to be finalists for the Family Friendly Awards hosted by Employers for Childcare. To be chosen, organisations must demonstrate that they embrace family-friendly employment initiatives and actively promote the initiatives to employees. They must also show an innovative and creative approach to the implementation of these initiatives.

Awarded EMIS Partner 2021


In 2021 VTSL was awarded an EMIS Partners Certificate of Assurance for the VTSL GP Buddy 1.0.0 which integrates with EMIS Web GP utilising the EMIS Partner API.  The certificate was awarded after a rigorous testing and evaluation process.