John Olsson operated a world-renowned forensic linguistics consultancy and training service at www.thetext.co.uk from 1996 onwards. He worked an Adjunct Professor at Nebraska Wesleyan University, USA, where he taught forensic linguistics online. He was also Visiting Professor of Forensic Linguistics at the International University of Novi Pazar in Serbia where he ran an annual summer school in Forensic Linguistics, and was a board member of the Language and Law Centre at the University of Zagreb, Croatia, where he was also a visiting Professor. He was then a lecturer in Forensic Linguistics in both the School of Linguistics and the School of Law at Bangor University, Wales, and was head of the Forensic Linguistics Institute.