Mr Stephens has worked solely as a forensic scientist
since 1989. He has carried many experiments in both blood and breath
alcohol levels in individuals. Having run the Camic Datamaster, Lion
Intoximeter 3000, Lion Intoxilyzer 6000UK + Intoximeter EC/IR evidential
breath testing devices many hundreds of times during test conditions,
he has had published a paper on the Camic Datamaster and the minimum
lung function required to provide a sample in the Journal of the Forensic
Science Society together with other related articles and papers. He
has also carried out tests upon mouth alcohol, and the effects of various
medical conditions upon an individual's ability to metabolise alcohol.
Mr Stephens has prepared reports involving thousands of BAC calculations
and when required, given evidence in both Magistrate and Crown Courts.
He has also acted upon the instructions of the Crown solicitor in relation
to fatal levels of alcohol, and provides evidence on a regular basis
for both the Prosecuting authorities and defence solicitors. Mr Stephens
also gave evidence on alcohol metabolism to the Marchiness enquiry.
Mr Stephens has lectured as part of the FAGIN course,
a course for police surgeons to gain their DMJ, on breath, blood and
urine alcohol levels along with the various methods of analysis, problems
and the procedures involved. He has also lectured to students taking
BScs in Forensic Science at the University of Teesside and since 1997
/ 1998 has lectured at Kings College London on alcohol metabolism and
the evidential breath test devices as part of the MSc course in Forensic
Science. Mr Stephens also lectures on alcohol metabolism and related
matters on a forensic course run by the University of Southern Mississippi.
Mr Stephens has also supervised MSc students on their
three month practical assignments from both Kings College London and
the University of Strathclyde, Glasgow.