Login Join Us


Sir Martin Spencer, Justice of the High Court, Queen's Bench Division (Chair of the Board of Governors)

Sir Martin Spencer is a Justice of the High Court, Queen's Bench Division. Previously, he was a leading clinical negligence barrister, whose practice at Hailsham Chambers involved all aspects of clinical negligence, with particular expertise in complex high quantum claims, representing both claimants and defendants. Significant cases include Daniels v Walker [2000] 1 WLR 1382 Court of Appeal, on the use of joint experts under the CPR.

Sir Martin was called to the Bar in 1979 and took silk in 2003. He was appointed as a Recorder in 2001 and authorised to sit as a Deputy High Court Judge in 2017. As chair of governors of the EWI, Sir Martin is focused on ensuring the Institute continues to lead in supporting experts from all professional disciplines, raising standards through training and education and representing their views across a wide range of stakeholders.

Sir Martin has a law degree and MA (jurisprudence) from Oxford University and studied as a Danish Government Scholar in Copenhagen. He has delivered numerous lectures and contributed to a number of publications in the UK and Denmark.

Sir Martin has been Chair of Governors of the Expert Witness Institute since 2017.


Kay Linnell MBA, FCA, FEWI, Chartered Arbitrator, CEDR Mediator, CFE (Vice-Chair and Treasurer)

Kay is a forensic accountant specialising in all commercial matters, such as share valuations, insurance claims, management consultancy, construction disputes, business interruption, insolvency and corporate recovery, fraud investigations, forensic reconstruction, tax professional negligence and tax investigations. She has provided expert evidence in civil, family and criminal litigation in the UK and around the world.

Kay has a wealth of experience in matters of compliance, having been the Chief Executive of the Joint Insolvency Monitoring Unit Limited for the self-regulation of the insolvency profession; and held the position of the Board of Inland Revenue’s Chief Investigating Accountant and Head of Accounting Profession at HMRC. She is currently a Trustee and Director of several not-for-profit organisations and Charities.

Kay is a Part Time Lecturer at the University of Portsmouth and is a Past Master of the Worshipful Company of Arbitrators a City of London Livery company. Kay is a Fellow of the Institute of Chartered Accountants in England and Wales, has an MBA from the University of Sheffield, is a Certified Fraud Examiner, a Chartered Arbitrator and a CEDR Accredited Mediator. She is also a member of the ICAEW London Police Liaison Panel. Kay is the author or co-author of Tolley’s Tax Appeals (2001); Tolley’s Accountancy Litigation Support (1998-2004); Experts in the Civil Courts (OUP, 2006).

Kay has been a Governor of the Expert Witness Institute since 2005 and is currently vice-chairman and Treasurer.


Mark Broadbent

Mr Mark Broadbent is a Trauma and Orthopaedic Surgeon, with sub speciality interest in Hand and Upper Limb Surgery. He has worked as a Doctor within the NHS for 22 years, and as a Consultant Orthopaedic Surgeon in NHS Greater Glasgow and Clyde for 11 years. He has over 10 years’ experience as an Expert Medical Witness, undertaking over 200 specialist reports each year. He set up Scotland’s most successful Medicolegal facilitation company, Resolve Medicolegal in 2012. For the last 4 years, he has organised the only national Medicolegal conference in Scotland for medical experts, advocates, solicitors and paralegal staff. His professional relationships within the personal injury community in Scotland are invaluable in supporting the EWI’s presence in Scotland, and will help develop training opportunities across the whole of the UK. 


Allen Hirson MA, MEWI

Allen Hirson is a senior lecturer in phonetics and director of the Speech Acoustics Laboratory at City University in London. He has worked on around 1100 cases involving evidential speech recordings over a 23 year period and has given evidence at all levels from magistrates to the International Criminal Court and International Commissions of Enquiry. As an independent forensic scientist he works equally for the prosecution and the defence, on questions around telephone recordings, covert recordings, speaker identification, speech decoding and other matters.

He has worked on more than 21 languages other than English, often collaborating with language specialists from around the world. Allen is a founder member of the professional association overseeing forensic phonetics internationally (IAFPA) and has been a Governor of the Expert Witness Institute since 2011.


Colin Holburn MbChB, FRCS(Ed) FRCEM MBA MEWI

Colin has been a Consultant in Emergency Medicine in the West Midlands since 1992. In addition to his clinical work he has been a Clinical and Divisional Director gaining an MBA on a part time basis.  He also has been involved in Emergency Planning within the NHS over a number of years.

He has also been involved in local, regional and national training roles in Emergency Medicine and was Chair of the Royal College of Emergency Medicine (RCEM) Training Standards Committee for 3 years.

He was a member of the Council of RCEM for 3 years and now sits on the Corporate Governance Committee of RCEM

He is an Examiner for the Fellowship examination of RCEM.

Colin was a founder member of the EWI and has an expert witness practice now mainly concentrating on Clinical Negligence cases and also expert evidence for Inquests. He has prepared over 1000 reports for both Claimant and Defendant and has appeared in Court and at Inquests.

He is a member of the EWI membership committee and was elected as a Governor in 2020.


Peter Mulhern

Peter Mulhern was admitted as a solicitor in 1993 and retired in 2017. 

Prior to retirement he was a specialist personal injury and clinical negligence practitioner, being a partner at Thompsons from 1995 until retirement.  During his time as a solicitor Peter developed a specialist interest in brain injury and spinal cord injury cases.  He was a member of the Law Society Personal Injury Accreditation Scheme and a member of the Association of Personal Injury Lawyers.

He held a number of management and professional lead roles within the firm.

Peter established the Court of Protection department at Thompsons and was appointed as a Professional Deputy for Property and Financial Affairs for the firms’ clients.

Throughout his career Peter has instructed and worked with experts from a wide range of specialisms including medical, engineering, care, case management, accountancy, architecture and many therapies.

Since retiring as a solicitor he is a trustee/owner of a well established medical reporting organisation providing medical and other expert witness reports to a number of solicitor firms specialising in personal injury and clinical negligence practice.

Since 2010 Peter has been secretary (until 2016) and a volunteer with Headway Coventry & Warwickshire, a Branch of Headway, the National Brain Injury Association with responsibility for running a twice monthly support group meeting for brain injury survivors.


Saba Naqshbandi

Saba Naqshbandi was called to the Bar in 1996 and practises from Three Raymond Buildings. She is a commercial crime, health and safety, inquests and inquiries specialist with a recognised reputation whose advice is sought both nationally and internationally. Her clients include foreign Governments, enforcement authorities, corporates and individuals.

Saba’s current and previous appointments include Assistant Coroner for Inner North London (2019-), Court of Arbitration of Sport Pro Bono Lawyers Panel (2019-), Bencher of the Middle Temple (2016-), Bar Council International Committee Member (2016- 2018), Middle Temple Membership Committee Member (2014-), Chair of the Annual Bar Conference (2013), Co-Chair of the Criminal Law Committee of the International Bar Association (2009-2012), Elected Committee member of the Criminal Bar Association Committee (2009-2012), Saba was appointed as a Governor of the Expert Witness Institute in 2019.


Edward Picton BEng(Hons) DipFM CEng FCIBSE MIMechE MEWI ACIArb MIoD

Edward has over 35 years experience in Engineering. He is a Chartered Engineer and Fellow of the Chartered Institution of Building Services Engineers. His Technical and Contractual Expertise is that of Mechanical & Electrical Systems in buildings.

He is significantly involved in Dispute Resolution acting as either an Expert Witness, or Technical Expert, with experience in both the UK and overseas. He has provided evidence for the Court, Arbitrations and also Adjudications. As part of this role Edward has also been involved in mediations, both formal (connected to litigation) and informal(pre-litigation).

As well as his formal qualifications and memberships, Edward is also a Freeman of the Worshipful Company of Engineers, Member of the Society of Construction Law and Member of the Arbitration Club (City Branch).

Edward was appointed as a Governor in June 2020. His previous Governor roles include that of a Secondary School for 11 years.


Michael Pilgrem MA (Cantab), ACA, MEWI

Mike Pilgrem is a Senior Managing Director in FTI Consulting’s Economic and Financial Consulting practice and a chartered accountant.

Over the last 29 years, his responsibility has included audit, financial consulting and business valuation in different industries. He has advised on the value of companies and their intangibles in a variety of contexts.

Mike has been appointed as expert witness and prepared reports in matters before arbitral tribunals, the English High Court and other courts, and given oral testimony before tribunals and the High Court.

During the course of his career, he has been responsible in over 80 cases for one or more expert reports or for written submissions to, or determinations by, experts; including some of the largest commercial claims seen in the UK.


Richard Porter MSc, MEWI, FRCOG

Richard has been a consultant (obstetrics and gynaecology) in Bath since 1989. He was executive medical director of Wiltshire Healthcare NHS Trust for 9 years in the 1990s and has acted as a medical adviser for WHO and NGOs in former Soviet republics and Eastern Europe for more than 15 years.

Richard has provided expert evidence in more than 2000 cases of civil litigation and disciplinary inquiries and has given oral evidence in more than 20 cases.

Richard has been a governor of the Expert Witness Institute since 2016.


Michael Tibbatts MRICS MEWI

Michael has been a member of EWI since October 2015. He qualified as an expert witness by taking and passing the Cardiff University/Bond Solon – CUBS - Diploma Certificate in 2014/2015. He is a member of the Expert Surveyors Group (ESG), where he keeps his CV as an Expert Witness. Refer to: http://www.xsurv.co.uk/michaeltibbatts. He islisted by RICS on the President’s Panel of Expert Witnesses (Residential Valuations).

In the past five years, he has been asked to write and then present expert valuation evidence on several specialised topics. One of these specialised topics is the calculation of diminution in value (if any) following application made to the Upper Tribunal (Lands Chamber) under Section 84 of the Law of Property Act 1925 for discharge or modification of restrictive covenants. He is frequently called upon to value residential properties, as a Court appointed single joint expert witness, in matrimonial disputes.

He is a specialist residential leasehold valuer (1967 Act – Houses and 1993 Act – Flats). He is a party wall surveyor and he also addresses issues, if asked, in respect of alleged professional negligence by solicitors and surveyors.

He hopes that by serving as a Board Member of EWI until 2022, he might be able to advance the role of expert witnesses in his profession and among solicitors, some of whom are sometimes ignorant of the rules and strict ethos, which expert witnesses must always follow.


Chris Turner

Chris Turner is an experienced commercial pilot, currently an instructor and examiner on Boeing 787 aircraft for TUI Airways. In a forty five year aviation career he has amassed 19,000 flying hours, worldwide, on a variety of jet, turboprop and light aircraft.

He has also held a number of senior management posts including that of Chief Pilot, and of Operations Director, for a major UK airline. Chris has wide international experience in the recruitment, selection, and training of pilots, as well as in technical and operational matters, and in pilot industrial relations. He has acted as the responsible Operations Manager in the merger of two charter airlines, and in the merger of a charter airline with a low-cost airline.

Chris has acted as an Expert Witness since 2012 on behalf of both claimants and defendants in a variety of cases ranging from airliner and light aircraft accidents and incidents, through airfield planning matters, to pilot employment issues. He is a Director of Axten Aviation Ltd, a member of the British Airline Pilots Association, and a Fellow of the Royal Aeronautical Society. Chris was certificated as an Expert Witness by the EWI in 2017.

In his leisure time Chris flies light aircraft in the UK, Europe, and USA, holding both European and USA licences. He is also a qualified seaplane pilot.