Trinity paid £8m for the £3.5m-turnover business, which recorded an operating profit of £1m to 31 March 2011. The deal follows Trinity's acquisition of digital marketing specialist Rippleffect in 2008.

Sly Bailey, Trinity Mirror chief executive, said: "Increasingly we're seeing that, in addition to print and website advertising, clients want help in areas such as website design, search engine optimisation, email marketing, social media and web analytics.

"The addition of Communicator Corp to our stable of digital assets will enhance our offering and complement the digital marketing services. Personalisation and targeted content are increasingly sought after by marketers in a multi-channel world and Communicator Corp is recognised in the industry for its ability to meet this demand.

"This investment is another demonstration of our strategic intent to drive more diversified revenue streams across multiple media channels and accelerate our growth into a multimedia business."

Communicator Corp provides digital communications in 178 countries and 30 languages. Trinity Mirror Digital recruitment is an existing client of the Sunderland-based business. It also has Adidas, All Saints, Co-operative Bank, Mitchells and Butlers and Scottish and Southern Energy as clients.

Managing director Chris Wilds said: "We're delighted to be joining Trinity Mirror as it will position us for a successful future as part of one of the UK's largest multimedia publishers."