INTERXION HOLDING NV (NYSE: INXN), a leading European provider of carrier-neutral colocation data centre services, announced today that, in response to demand from the financial services, digital media, and cloud service providers segments, it is expanding its space and power capacity in its City of London campus. Interxion is building an additional data centre (LON 2) which will offer over 1,700 square metres of new equipped space and is scheduled to be available in the second quarter of 2012. The company is also adding an additional 11 MW of customer power to the City of London campus which is scheduled to be available in the fourth quarter of 2012. “Our location in the City of London provides our customers with superior response times for their most demanding applications,” said David Ruberg, Interxion’s Chief Executive Officer. “London is one of the leading Internet hubs in the world and has historically been the highest demand market in Europe for carrier-neutral colocation data centre space. By continuing to expand our capacity in this key market, we are demonstrating a commitment to support our customers’ current and future growth plans.” Interxion has had particular success in attracting customers in the financial services segment and currently houses over 100 trading & investment firms who benefit from the low latency connectivity to the trading exchanges located at, or within close proximity to, Interxion’s City of London campus. Interxion’s second London data centre is designed to support up to 2.5 kVA per sqm of continuous customer load and is secured by a long term lease. The capital expenditures for LON 2 are expected to total approximately €38 million (£33 million). The Company’s 2011 CAPEX guidance of €140 to €160 million includes the forecasted 2011 spending for the LON2 facility and the power expansion. Together with other announced capacity expansions made since the beginning of this year, Interxion will have added over 10,000 sqm of new equipped space between January 2011 and June 2012 through new facilities and upgrades in key European markets, including Frankfurt, London, Paris, Dublin, Dusseldorf and Vienna.