Mark Leonard

Mark Leonard was appointed EVP, Infrastructure Services Unit (ISU) in January 2011, and is responsible for integrating the activities of Operations, Technology and IT. Mark joined Colt as Chief Information Officer (CIO) in February 2008. He has extensive experience of IT within the telecoms sector, having held the position of CIO at Vodafone UK, IT Director at NTL, and a senior management role at IBM Global Services.

IPv6: the sky is not falling

01 Jun 2011

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What an incredible successful story the Internet is! Nobody, not even the recognised “fathers” of the Internet, Vint Cerf and Bob Khan, would have ever imagined that the experimental ARPANET point-to-point link connecting the University of California Los Angeles to the Stanford Research Institute in the late 60s would grow to become the Internet, a universal [...] Read more


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