Mark works closely with all colleagues in Fapas but also consults and collaborates with other colleagues in Fera and externally. His responsibilities include co-ordinating the Fapas Advisory activities. Mark's background is in analytical chemistry, specifically chemical residues testing using mass spectrometry. He moved away from the laboratory bench to join Fapas in 2009.

Mark is an author or co-author of over 20 peer-reviewed scientific papers and a book chapter and continues to publish work on proficiency testing data. Mark travels extensively to speak at international conferences and workshops, to meet customers and agents. Mark is also a member of the Royal Society of Chemistry, Fapas representative of UK Proficiency Testing Working Group and Fapas representative of EA ILC Testing Working Group.