Its the years of study, research and development of its people and processes that gives Mass Spec its industry leading expertise.

Mass Spec works intensively in key industries where it has extensive experience, insight, and relationships to deliver value for its customers.  

Our Expertise

Mass Spec's expertise comes from key members of the forensic scientific community

Richard Sleeman BSc (Hons), PhD, CSci, CChem, FRSC, MFSSoc: Scientific Director 

Dr Sleeman is one of the founders of Mass Spec Analytical Ltd. and currently holds the position of Scientific Director. Dr. Sleeman obtained his PhD from the University of Bristol. He is a member of the Academy of Experts, and has been a Law Society Checked Expert Witness since 1997. 

For most of his career he has specialised in the detection of trace quantities of drugs and explosives. He has published over thirty scientific papers and articles on trace detection. He has been closely involved in the development of the techniques and methodologies employed in the examination of drugs traces on paper currency, and has presented such work in Court on approaching one hundred occasions, including at the Court of Appeal on three occasions. Dr. Sleeman’s areas of expertise include trace drugs and explosives evidence, mass spectrometry (MS), ion mobility spectrometry (IMS), and blood alcohol calculations.

Mr John George Luke: Company Secretary, Business & Engineering Director 

John Luke is a founding director and Business Manager of Mass Spec Analytical Ltd. He is an Aerospace Engineer who worked as a Project Manager for various British Aerospace projects. He is entirely familiar with the procedures and protocols consistent with the economic and efficient execution of business practices. Within MSA, he has controlled several projects simultaneously, involving overseas and UK customers and suppliers.

Mr. Luke was responsible for the design and manufacture of MSA’s boarding pass analyser prototypes, and all of the MSMS front-end introduction units, including related control and other supporting equipment developed at MSA to date. Mr Luke has also adapted MSA design introduction units to function successfully with alternative design mass spectrometers.

He continues to be involved with various ongoing research projects and most recently has completed a prototype high volume trace vapour collection and detection system, suitable for the detection of explosives, drugs or other illicit substances in cargo. 

Mr. Jonathan Brian Langton BA (Hons): Commercial Director 

Jonathan Langton is Mass Spec Analytical’s Commercial Director and has a BA (Hons) Degree in Business Studies. He has gained experience of business over twenty years working as an accountant in industry.

He worked for British Aerospace within the Security Systems business unit and when Mass Spec Analytical Ltd (“MSA”) was formed in 1994 he left to join Robert Bosch Ltd working for seven years as a Management Accountant and then Systems Accountant. However, he remained in touch with MSA and its development and, in 2001, joined the company. 




Fay Amelie Thomas MSci (Hons), MFSSoc, MRSC: Senior Forensic Scientist 

Fay gained an M.Sci. (Hons.) in Chemistry from the University of Bristol in 2004. She is a Member of the Royal Society of Chemistry, a Member of the Forensic Science Society and a member of the British Mass Spectrometry Society. Fay has been employed at MSA since 2004 as a Reporting Forensic Scientist.

 Her current field of expertise includes the analysis and interpretation of traces of illicit drugs on items, for which she has appeared in court as a prosecution expert witness on numerous occasions receiving positive feedback. Additionally, Fay has experience in the analysis and reporting of the alcohol content of blood/urine samples for defence clients.

Fay is actively involved in performing research, method development and validation for new services provided by MSA, largely within, but not confined to, the following fields: IRMS, bulk drugs analysis, packaging analysis, fuel analysis and explosives analysis. Fay has published research in peer reviewed journals and presented research at conferences. 

Elizabeth Drake BSc (Hons), MSc, MFSSoc, MRSC: Forensic Scientist 

Elizabeth Drake has been employed as a Forensic Scientist by MSA since 2005, prior to this she worked as an industrial technician in the chemical industry. She was awarded a BSc in Chemistry with Industrial Experience from the University of Wales, Cardiff, and has since continued her professional development as a member of the Forensic Science Society, the British Mass Spectrometry Society and the Royal Society of Chemistry, for which she is currently working towards chartered status.

Elizabeth specialises in using tandem mass spectrometry for the identification of trace amounts of illicit drugs. She also has experience in other analytical techniques including GC-FID, GC-MS and FTIR. She routinely analyses items for traces of illicit drugs and documents her findings in statements and reports. She regularly attends court as a prosecution expert witness.

Peter Luke: Senior Engineer 

Peter joined MSA in 2002 after an 18-year career as an electrical engineer. In his time at MSA, Peter has been involved in a number of key international projects involving MSA’s mobile mass spectrometer detection system, the Scentinel. 

The projects have involved Peter designing and developing core equipment and peripherals, and assisting and supporting the deployment of the equipment around the world. He is MSA’s designated field engineer and is responsible for working on the maintenance contracts MSA has with its Scentinel customers.

Peter has trained US airport workers, Police Officers in the UK, army personnel in Northern Ireland, and government officials in the UK and USA, to use the equipment in a variety of detection scenarios. Peter has extensive experience in the maintenance and use of Sciex API Triple Quadrupole mass spectrometers and the related operating software; the Analyst.