Charles worked in the Department for Business, Innovation and Skills of the UK Government for 12 years and is a Professional Electronic Engineer. He previously was Head of Security for the UK mobile operator one2one, and worked within British Telecom for twenty years before that, in the last few years in the Chairman’s Office. He has worked in many security areas over the last 40 years, including Cryptographic systems, secure designs, policies, auditing, and mobile radio for over 30 years. He now runs his own Company Zeata Security Ltd and is a Director of Azenby Ltd.
He has been Chairman on the GSM Association Security Group for 25 years. He has been working within GSM and 3GPP security standards, first chairing the Algorithm Expert Group way back in 1986. He is Chairman of the NISSG, a group that was set up to co-ordinate security standards amongst the three European Security Standards Organisations and other bodies outside Europe. He is also Chairman of ETSI OCG Security, which is responsible for security within ETSI. and was on the Permanent Stakeholders group of ENISA, The European Network and Information Security Agency.