NewVoiceMedia has been ranked among the London Stock Exchange Group's 1,000 Companies to Inspire Britain, an index of the UK's most 'exciting and dynamic' businesses.
The second edition of the report profiles a cross-section of the economy, highlighting some of the fastest growing enterprises in the UK.
The 1,000 businesses listed have, on average, more than doubled their revenue in the past four years and are major contributors to the country's economic growth and job creation.
IT was identified as the top performing sector. Responsible for 7% of jobs created and with 65 companies featured on the list, it is estimated that the sector will add £12bn to London's economy over the next decade.
NewVoiceMedia recently announced that it grew its international new business by 528% in FY 2015 while continuing to expand its UK base.
Xavier Rolet, chief executive of the London Stock Exchange Group, said: "This report is a significant part of London Stock Exchange's broader campaign to support UK high growth companies in their journeys from start-up to stardom and to create an entrepreneurship revolution.
"I'm delighted that a strong alliance between UK government, financial market participants, investors, entrepreneurs and companies has been created to support these inspiring businesses."