Patsystems Locates Its London ASP Hub within Interxion



LONDON 21 July 2011INTERXION HOLDING NV (NYSE: INXN), a leading European provider of carrier-neutral colocation data centre services, is pleased to announce that Patsystems, a leading provider of trading and risk management solutions, has selected its City of London data centre to host its recently launched London access point. Market participants can now easily and cost-effectively interconnect to Patsystems XConnect hub at Interxion.

Patsystems is a leading provider of solutions that enhance derivatives trading performance and trade processing, including real-time risk management tools and comprehensive exchange systems. Patsystems XConnect is a global, fully managed Application Service Provider (ASP) network. It provides customers with low-latency connectivity to the world's leading futures markets and access to Patsystems' suite of front-end trading tools without the need to invest in hardware infrastructure or related technical support resources.

Graeme Neilly, Patsystems Director of Global Account Management, said, “London is an important addition to our global Patsystems XConnect offering, serving as an access point for European market connectivity. In addition, the London ASP enables us to extend our offerings to a wider range of financial institutions, including those who are not candidates for a traditional implementation model or who prefer hosted technology solutions.

Interxion’s City of London data centre is the ideal location for our service, offering intra-data centre connectivity to derivatives markets like NYSE Liffe, London Metal Exchange and a large number of buy-side and sell-side firms."

Greg McCulloch, Managing Director of Interxion UK, adds, "Our strength lies in providing choice and flexibility through a broad range of exchange connectivity options and access to a wide range of value-added services offered by the financial community located within our data centres. Patsystems is a valuable addition to our Financial Hub in London, and it’s great that our customers can now benefit from their exciting portfolio of services.”

Interxion offers colocation to liquidity venues such as Burgundy, Equiduct, Plus Markets and Nordic Derivatives Exchange, and proximity hosting to NYSE Euronext, BATS Europe, Chi-X Europe, Bolsa de Madrid, London Metal Exchange and SIX Swiss Exchange. In addition, Interxion offers access to Deutsche Börse Group’s trading systems through a shared, multi-member infrastructure solution.

Notes to editors:

About Interxion
Interxion (NYSE: INXN) is a leading provider of carrier-neutral colocation data centre services in Europe, serving over 1,200 customers through 28 data centres in 11 European countries. Interxion’s uniformly designed, energy-efficient data centres offer customers extensive security and uptime for their mission-critical applications.

With connectivity provided by 350 carriers and ISPs and 18 European Internet exchanges across its footprint, Interxion has created content and connectivity hubs that foster growing customer communities of interest. For more information, please visit .

About Patsystems
Patsystems delivers tailored solutions, built from modular components, to enhance derivatives trading performance and trade processing. We work in partnership with our customers to deliver robust systems that align with their business strategies. Our solutions can range from a plug-and-play module to address a specific issue, to complete high-performance trading systems with global market access.

Patsystems operates from a global network of offices covering all major derivatives trading centres. Our shares are traded on the London Stock Exchange’s Alternative Investment Market (AIM). .

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Katherine Murray, Global Head of Marketing
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