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About Cosslett & Barr

Steve Cosslett

Forensic Document Examiner


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I have given expert evidence as a forensic handwriting expert/document examiner on approximately 400 occasions for both the prosecution and defence in criminal cases as well as in Civil cases. In my career I have given evidence in most Crown Courts within England and Wales including the Central Criminal Court (Old Bailey), at the Royal Courts of Justice, the Four Courts and Special Criminal Court in Dublin as well as in Northern Cyprus.

In April 2011 I was the convenor of the Forensic Science Society Questioned Documents Conference, this was the first conference aimed specifically at questioned document examiners in the UK for a number of years.

Kathryn Barr

Forensic Document Examiner

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I am an experienced witness and have given evidence at the Central Criminal Court (Old Bailey), Royal Courts of Justice, Crown Courts, Magistrates Courts, Industrial Tribunals and Police Disciplinary Hearings.

I have given evidence three times at the International War Crimes Tribunal (ICTY) in The Hague in relation to the Srebrenica Massacre, leading to the convictions of a number of individuals, including the first two convictions for genocide.  My evidence has been used by the ICTY in the prosecution of Radovan Karadžić.  I have also worked for the International Criminal Court in The Hague.

The appeal was allowed, primarily due to the expert evidence in relation to ESDA. The convictions have been quashed. We are very grateful for your assistance throughout and hopefully look forward to working with you again in the future.

Solicitor – Northern Ireland