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Christian has 20 years investigative experience, mainly in the covert arena, with 16 years exemplary service as a Scotland Yard detective. As well as being a published author, with several literary projects in the pipeline, he has private sector experience in covert investigations, security management and planning, risk and loss prevention, surveillance, physical security and training.

Christian has acquired a wide network of contacts and is currently embarking on a venture specialising in providing specialist covert investigative services to industry, commerce, NGOs and the media.

A qualified CELTA English teacher, Christian is able to speak fluent French, excellent Russian and German, and rudimentary Dutch.

Christian has appeared on several BBC radio programmes, including the World Service and Radio 4. He has been featured on Channel 5 TV, The Discovery Channel and ITV, as well as in articles in The Times, The Sun and The Observer. He is widely sought for his insight and commentary into undercover and traditional policing in the UK. Christian has provided consultancy for impending TV drama. Most recently, Christian was interviewed by the Radio Times.

Christian has dealt with varied consultancy projects, multi-national security training inputs, and presentations to academia.

Christian is a member of the National Union of Journalists. His writing is available via his LinkedIn page.