About us

Haberman Ilett provides accounting and financial expert witness and related services in UK and international litigation, arbitration, and alternative dispute resolution.

We provide expert evidence in matters arising from commercial and contractual claims, shareholder disputes, investment treaty claims, competition and anti-trust cases, and those arising out of corporate transactions.  We also act as the expert determiner, or for the buyer or seller, in completion accounts disputes.

We distinguish ourselves from our competitors by offering a truly independent service.  Where large firms are constrained by their wider commercial relationships, we are a dedicated forensic firm that combines the knowledge and experience gained by our team in the Big Four and other firms with the agility and focus that comes with being a specialist practice.

If there is an accounting or financial aspect to your dispute, please contact any of our partners.

Leadership team

Our founding partners, Philip Haberman and Frank Ilett, are two of the best-known expert witnesses in the world.  Between them they gained more than 30 years’ partner experience before launching Haberman Ilett LLP in September 2013.  Initially with four fee earning staff, including Vikki Wall, who is now a partner, the firm focused on building a high-quality team that could take on substantial cases.

In September 2014, Valery Knyazev joined as partner.  Liz Perks and Bruno Augustin were promoted to partners in March 2015.  Graham Nunns joined as director in January 2017 and Debbie Revill was promoted to partner in April 2018.  By this time, the firm was made up of over 30 fee earners working on cases where the damages claimed range from USD 10 million to more than USD 10 billion.

So far in our short history, members of the Haberman Ilett team have given evidence in the witness box over 30 times and we have been involved in more than 100 cases.

Please click for information about our CSR programme, training for lawyers and Women’s Network.

Related news

Philip Haberman named Arbitration Expert Witness of the Year

23 May 2019

Fifth consecutive year

Third on Expert Witness Firms’ Power Index 2019

13 May 2019

For the second year in a row

Eight nominations in WWL’s 2018 listings

1 August 2018

Our consulting experts include future leaders

Oleg Grynyuk and Olesya Prantyuk speak at the VI Arbitration School in Kyiv

25 May 2018

The experts’ perspective

In particular, [Partner’s] witness performance was very much appreciated.  You did an excellent job.
Lead arbitration partner

Congratulations, Phil, on being appointed to the board of the LCIA.  I’m sure you will bring a very valuable perspective to the board.

Clients say Vikki Wall is “very responsive” and commend her “ability to understand complex facts and present them in a very user-friendly form”, adding: “She is very hardworking and exceptionally clever.”
Who's Who Legal, Consulting Experts 2017

Valery is “utterly committed to providing a high-quality service.  He handles cross-examination and tribunal questions fluently and confidently, and is he simply the best for Russian-language matters”.
Who's Who Legal, Consulting Experts 2016

The “outstanding” Liz Perks is highly regarded for her expertise in a broad range of commercial and investment treaty disputes.
Who's Who Legal, Consulting Experts 2017

Frank Ilett enjoys a fantastic international reputation as a leading valuation expert, and is commended for his “exceptional attention to detail” and “straight-forward approach”.
Who's Who Legal, Arbitration 2018

Haberman Ilett’s third place is particularly striking, as it is a newer name… and as our research shows is already among the group of firms trusted to manage the larger cases.
GAR 100, Expert Witnesses 2018

Conflict free expertise in accounting and financial matters