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The origins of our firm can be traced back to 1980 when John Frenkel established his own accountancy practice.

Our firm was one of the first accountancy firms in the UK to offer forensic accountancy services.  We have now specialised in this work for over 35 years and provide a dedicated forensic accountancy service to solicitors, barristers, insurers and private individuals on a national basis.

We offer a broad range of forensic accountancy services such as personal injury (including pension losses and fatal accidents), business valuations, losses arising from mis-sold hedging products, commercial disputes, divorce investigations , fraud investigations, proceeds of crime, expert determination, tax investigations, professional negligence and computer forensics.

We now work regularly with insurance companies and solicitors across the UK and abroad helping them prevent and resolve legal disputes through our forensic accountancy expertise.  Our forensic accounting team is highly qualified and knowledgeable in all aspects of forensic accountancy and aims to provide our clients with a high quality service.

We undertake both civil and criminal assignments and act for defendants, claimants and as single joint experts

John Frenkel FCA - Principal

John Frenkel qualified as a chartered accountant with one of the Big Four in 1978. He has always focussed on forensic accountancy both after he established Frenkel Topping in 1980 and also after he set up Frenkels Forensics | Chartered Accountants in 2001.

John has expertise across all areas of forensic accountancy and is a regular speaker at forensic accountancy seminars and contributes to the professional press. He has co-authored a book on personal injury with two leading QCs. John has worked on over 4,000 cases in his career.

John has also appeared on Sky News (view here) and Channel 4 News (view here).

Our staff can be contacted on firstname.surname@frenkels.com.

Download John’s CV

Vivian Cohen FCA - Partner

Vivian Cohen qualified as a chartered accountant in 1981 and following a period working in the leisure industry he joined an insurance claims company, specialising in the preparation of and negotiation of all types of commercial claims, particularly business interruption claims, until 1995.

Since then Vivian has specialised solely in forensic accountancy and was a director of forensic accountancy at Baker Tilly until he joined Frenkels Chartered Accountants in November 2008. He has been involved in over 500 forensic accountancy instructions with cases across the whole range of the forensic accountancy spectrum.

Our staff can be contacted on firstname.surname@frenkels.com

Download Vivian’s CV

Vitek Frenkel FCA - Partner

Vitek Frenkel qualified as a chartered accountant (ICAEW) with one of the Big Four in 2004, following which he worked for a central London accountancy practice.

He set up his own internet business prior to joining Frenkels in 2007 and has since specialised in forensic accountancy.   Vitek has worked on forensic accountancy matters across a broad range of issues and regularly gives seminars to legal professionals across the country.

Our staff can be contacted on firstname.surname@frenkels.com

Download Vitek’s CV

Marc Clifton - Forensic Manager

Prior to joining Frenkels Forensics at the beginning of 2010, Marc spent 17 years working in the motor personal injury claims industry, working across the spectrum for solicitors, insurance companies and loss adjusters, dealing with both Claimant and Defendant matters. His caseload included catastrophic injury cases as well as matters of public interest. His previous role at HSBC Insurance immediately prior to joining us involved a considerable amount of IT work.

Since joining Frenkels Forensics, Marc has been a key figure in building and developing our Computer Forensics and Data Analysis services, as well as being involved in a wide variety of our other forensic cases including personal injury, criminal defence and divorce.

Marc was instrumental in designing, creating and launching our free Ogden Tables online calculator, launched in summer 2011.

Our staff can be contacted on firstname.surname@frenkels.com

Download Marc’s CV

Pete Wildman - Forensic Manager

Pete first joined Frenkels Forensics in 1998, having spent 6 years working in the commercial claims and litigation department of an insurance company. His caseload included high value personal injury claims, motor insurance bureau work, as well as public and employer’s liability cases. Pete also spent a year working for a firm of loss adjusters before moving into forensic accountancy.

Since joining Frenkels Forensics, Pete has prepared hundreds of expert accountancy reports on a wide range of subjects, including commercial litigation, criminal defence, personal injury and divorce. Pete has also been heavily involved in the assessment of consequential loss claims arising from the mis-selling of structured collar products by UK banks.

Pete also has proven skills in software development and has utilised this to develop both in-house systems at Frenkels, and also commercially available case management systems for other companies. More recently Pete has used his skills to develop software with application to forensic accountancy by streamlining the analysis of substantial amounts of data.

Download Pete's CV

Zakia Chowdhury – Forensic Manager

Zakia qualified as a Chartered Accountant (ACA) in 2008 with a medium sized accounting firm, following which she started specialising in Forensic Accounting and Dispute Resolution.

She moved to a Top 20 firm in 2010 where she continued to specialise in forensic accountancy until she joined Frenkels Forensics in July 2014.

She has worked across a broad range of forensic accounting matters including matrimonial disputes, commercial disputes, fraud investigations, losses arising from mis-sold interest rate hedging products and interest rate swaps, business interruption claims and business valuations.

Download Zakia's CV

“May I take this opportunity to thank you for your assistance in this matter.  Counsel and the judge said that your report was one of the best they had seen in that it was concise and technically easy to understand.”
Mr E

“I am sincerely grateful to you, you are worth your weight in gold!”
Mr S

In reference to our Ogden calculator –
“This is the best thing ever”
Barrister at Cloisters Chambers

"I must thank you for your invaluable advices in the matter which enabled me to not only to serve a most cogent counter schedule, but were material in securing a realistic resolution in the matter."

"I am indebted to you for your contribution, and for explaining things in plain English such that even lawyers can understand the issues"

"It was a pleasure working with you on what was a rather difficult case"

"I have valued your work and approach on the matter of X and learned a lot from you and so always keep you in mind when solicitors ask for a forensic accountant."
Barrister at 3PB

"Many thanks to you and your colleagues for doing the near-impossible!"


Frenkels Forensics are accredited by the Law Society to give seminars across a wide range of forensic accounting topics.

Our most popular forensic seminars include Personal Injury and Pension Losses, General Forensic Accountancy Issues and Understanding a Forensic Accountancy Report.

We can prepare seminars on any forensic accountancy topic and will gladly work with you to provide a bespoke forensic accountancy presentation for your company.

If you are interested in any of our seminars please contact us. Follow the links on the left of the page to find out more about each of the forensic accounting seminars we offer.

We are always looking for exceptional individuals to join our team. If you think you have what it takes to work as a forensic accountant, please send us your CV with a covering letter.


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For more information about what Frenkels Forensics can offer, contact us.

Contact Frenkels Forensics