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Conflict free expertise in accounting and financial matters
Haberman Ilett LLP is a specialist accounting firm based in London, dedicated to providing accounting and financial expertise in the context of disputes, whether they are eventually resolved by negotiation, mediation, arbitration or litigation.

Latest news

Simon Procopiou promoted to Director

5 February 2019

Latest promotion within the firm

Expert Leaders in Arbitration

10 January 2019

Seven of our experts acknowledged

Nourish your brainpower!

1 October 2018

How to get the best out of our brains


Haberman Ilett has “carved out a name in the market off the back of some significant cases both in terms of value and what’s at stake, strategically.”
GAR 100, Expert Witnesses 2018

Philip Haberman is “hugely respected as an expert” according to sources who commend his exceptional work providing valuation analyses in both litigation and arbitration proceedings.
Who's Who Legal, Consulting Experts 2018

Frank Ilett impresses peers who consider him “an absolute must for inclusion” and praise his market-leading quantum expertise in financial-related disputes.
Who's Who Legal, Consulting Experts 2018

Bruno Augustin stands out among peers for his impressive work providing financial valuations and analyses in a wide range of disputes.
Who's Who Legal, Consulting Experts 2018

Valery Knyazev is recognised by sources for his “depth of understanding and first-hand experience in dealing with complex damages matters”.
Who's Who Legal, Consulting Experts 2018

Graham Nunns is held in high regard by market sources who highlight his “intellectual strength and clarity of expression”.
Who's Who Legal, Consulting Experts 2018

Liz Perks is a first-rate quantum expert who is praised for her “thorough and detail-oriented approach”.
Who's Who Legal, Consulting Experts 2018

Debbie Revill receives plaudits as a “very quick, very thorough and very reactive” expert who “really grasps the commercial realities”.
Who's Who Legal, Consulting Experts 2018

Vikki Wall is highly recommended by peers who praise her as a “very responsive” expert noted for her “grasp of the detail”.
Who's Who Legal, Consulting Experts 2018

Sources have “high praise” for firm co-founder Frank Ilett, noting his extensive experience as an expert witness in arbitration contexts.
Who's Who Legal, Arbitration 2019

The “highly rated” Philip Haberman is “hugely respected as an expert”, say sources. He is renowned for providing “bespoke service at the top of the quality tree”.
Who's Who Legal, Arbitration 2019

Valery Knyazev is a “very knowledgeable expert” who stands out for his “in-depth understanding and first-hand experience in dealing with complex damages matters”.
Who's Who Legal, Arbitration 2019

Liz Perks draws widespread praise for her outstanding forensic accountancy expertise, which she has deployed on a plethora of investment treaty arbitrations.
Who's Who Legal, Arbitration 2019
Debbie Revill is a “superb” expert who has deep experience testifying on quantum issues, with notable experience in the energy and natural resources sector.
Who's Who Legal, Arbitration 2019

Vikki Wall is recommended by sources as someone who is “always available to us when we need her” as well as a “flexible and fast” expert who gets “immersed in the detail”.
Who's Who Legal, Arbitration 2019
Graham Nunns is “a pleasure to work with”, according to interviewees, thanks to his “straightforward modern business manner” and “quick turnaround time”.
Who's Who Legal, Arbitration 2019