Completion of Alterian Acquisition

SDL Completes the Acquisition of Alterian

to Enhance its Global Customer Experience Solutions

SDL's acquisition of Alterian further demonstrates SDL's commitment to drive the global customer experience

30th January 2012 - Maidenhead, UK - SDL plc (LSE: SDL; "SDL"), a leading provider of Global Information Management (GIM) solutions, today announces that it has completed the acquisition of Alterian plc ("Alterian"). SDL has acquired Alterian, a leader in marketing analytics, social media monitoring and campaign management, for a net cash consideration of £69.7 million.

The SDL Board believes the addition of Alterian's integrated marketing platform capability will bring strong synergies and enhancements to SDL's Global Information Management strategy that helps global businesses engage with their customers in the language, the media and at the moment they choose. There is an excellent strategic fit in combining the marketing analytics, campaign management and social media capabilities from the Alterian product suite with that of SDL's leading global Web Content Management, eCommerce and Structured Content capabilities.

Mark Lancaster, Executive Chairman of SDL commented:

"Understanding what your customers are interested in by analysing what they are looking at, and for how long, is key in developing your web and customer engagement strategy. We already have best-of-breed web content management technology, user guidance content management technology and leading language technology. Adding Alterian's marketing analytics, social media and campaign management technology will provide customers with a superb integrated solution for managing customer engagement and improving customer experience. We are very pleased to have completed this acquisition and look forward to working with Alterian employees, partners and customers."

SDL will be hosting a short conference call for sell-side analysts to give a high level overview of the acquisition of Alterian at 8.30am UK time on Monday 30 January 2012.

To participate in this conference call, please use the following access details:

It should be noted that SDL updated the market on trading for the year ended 31 December 2011 on 17 January 2012 and will be making no further comment on the trading of the Group until the announcement of preliminary results on 28 February 2012. SDL will also fully update the market with regard to the strategy for the Alterian business at this time.

For further information please contact:

About SDL

SDL enables global businesses to engage with their customers in the language, the media and at the moment they choose. We help businesses manage their brands, drive global revenues, accelerate speed to market and enrich their customers' experience. SDL's enterprise-ready innovative technology and service solutions span the entire customer journey and include social listening and marketing analytics, campaign management, language management and services, video and written content creation, web content management, dynamic technical documentation publication and eCommerce. SDL solutions drive global reach across multiple languages, cultures, channels and media. Following the acquisition, SDL has over 1,500 enterprise customers, 400 partners and a global infrastructure of 70 offices in 38 countries. For more information, visit www.sdl.com.

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