The revenue increase translated into organic growth of seven per cent and a significant boost to profit before tax of 19 per cent to £2.49m.
The performance was largely due to investment in the US and Asia, specifically in digital comms.
Revenues in the firm's core tech business rose by 14 per cent, but the stand-out performer was the groups growing digital/research consultancy business, which saw revenues almost treble.
During the year the group Acquired Type 3, a web design company in London and San Francisco and merged it with Context Analytics and Project Metal to create Beyond, the group's first pure digital consultancy
The group also acquired 85 per cent stake in US-based investor relations tech-focussed company, The Blueshirt Group
Revenue in the US grew 22 per cent to £21.5m over the first half of the year, making up over half its total revenue.
Will Whitehorn, chairman of Next Fifteen, who steps down this year, said: 'These strong results reflect the opportunities the group is experiencing as a result of the market transition to digital. Our deep heritage in technology and investments in digital have put us in a great position to grow both our core customer base and into adjacent markets.
He pointed towards expanding its client roster during the period to win business with Zynga, Facebook, American Express and Google.
Whitehorn added: 'The group is also experiencing increased demand for solutions that involve more than one of the group's agencies as more and more of our customers look for a broader set of integrated services. The group will continue to invest in expanding its digital offering and also the key geographies in which it operates.'