Established 1976

Expert Witness Services & Consultants to Industry

Prof B J Stevens & Associates (Registered with The Trichological Society)

97 Grays Inn Road, Holborn WC1X 8TX & 19 Balgores Square, Gidea Park, Essex RM2 6AU

Tel: 07742 336 337 [email protected]

About Us


General Secretary/ Registrar

Professor Barry Stevens FTTS
Consultant  Trichologist  

Honorary Professor and Member of the Medical Advisory Board (Trichological Sciences) – Dr Batra’s Academy (Mumbai INDIA).

President of The Trichological Society 2014-2016

Fellow  – The Trichological Society (awarded 2002)

Honorary Fellow the Asian Society of Trichology (cc 2006)

Holder of TTS Diploma in Trichology – (bestowed 2000) – course syllabus at

APIL Expert (1st Tier).

Senior Lecturer and Student Mentor – TTS Worldwide Distance Learning College of Trichology.

Read trichology at London College of Fashion 1964-1967). Awarded the Diploma in Trichology of The Institute of Trichologists.

Past and current professional and pioneering activities:

General Secretary/Registrar – The Trichological Society (

2007 and 2008Visiting Lecturer and Examiner in Clinical Trichology  – KSHI, Seoul (South Korea).

Chief Examiner 1998 – Institute of Trichologists.

Director of Clinical Studies 1988 – 1999 Institute of Trichologists.

A pioneer in expert witness testimony (hair/scalp related matters) since 1976.

Pioneering work in single hair follicle transplantation surgery (FUE) techniques (instrument development) over 45 + years.

Chaired steering groups formulating TTS diploma courses in trichological sciences (with annual revisions).

Continuous private practice in London and Essex since 1967, currently consulting at Gidea Park (Essex) and Holborn (London), providing advice, opinion and where appropriate treatments/referrals for hair and scalp in health, disease and distressed circumstances.
Was consultant trichologist (one day per week) to the nationwide Andre Bernard Hairdressing Group (10+ years) and thereby gained a comprehensive knowledge of hairdressing practices (chemical, thermal etc) and the potential for damage / injury / adverse reaction  (temporary/permanent) caused thereby.

Past / Current adviser to:

Which? Magazine • BBC Watchdog • The Guinness Book of World Records • Pharmaceutical Industry • The media and numerous journalists (UK and overseas) • Trading Standards (UK) • The thermal appliance industry (HOT, Phillips and Imetek) • Unilever • ‘Want to be a millionaire’ (USA) • Academia worldwide.


Numerous short papers on hair/scalp topics see

Expert witness services:

Claimant,  Defendant,  Single / Joint – Criminal, Civil  and  Appeal cases.

Has taken instructions since 1976 from the following UK and overseas lawyers (see list –   to provide expert opinion relating to human scalp and hair following:
Accidental damage • Accident at work •  Assault Injury • Alleged medical malpractice •   Alleged negligent acts •  Adverse products reaction. Alleged drug taking during pregnancy..Mistaken identity •  Determination of the composition of hair products (human/artificial fibres) •  Distress associated with hair extensions hair systems and wigs
and at Appeal  (to date all appeals granted).

Photomicrography procedures available.

Territory: UK and Worldwide