Mercer & Hole has strengthened its Restructuring and Insolvency team with the appointment of Will Da Costa as Insolvency Investigations and Forensics Manager. Will has extensive experience in forensic accounting, financial investigations, and expert witness support.
Based in the firm’s London office, Will works with a broad client base, including private individuals, shipping and media companies, banks, governments and organisations in the oil, gas, and mining sectors.
Will began his forensic accounting career in 2016 at Alvarez & Marsal, working across disputes, investigations, and several specialist internal teams. He also completed an external secondment to the Financial Conduct Authority (FCA), further strengthening his regulatory insight.
After qualifying as a Chartered Accountant, Will joined K2 Integrity, where he focused on complex financial investigations. His work spanned asset tracing, internal investigations, and a wide range of forensic accounting assignments across multiple jurisdictions.
Will has developed strong expertise across forensic accounting and internal investigations. His work includes asset‑tracing enquiries and cross‑border financial investigations, often involving the review and reconstruction of complex bank statement activity and fund flows. He regularly undertakes financial data analytics and has experience in fraud, bribery, embezzlement, and misappropriation investigations, providing objective assessments supported by clear evidence.
Will also contributes to expert witness matters, including the quantification of damages and detailed financial reporting and disclosure assessments. His work frequently involves reconstructing financial transactions, analysing cryptocurrency activity, and conducting source‑of‑wealth reviews where clarity and rigour are essential.
Will Da Costa comments: “I am very excited to have joined Mercer & Hole and look forward to working with the team and clients across a range of sectors. I particularly enjoy the opportunity to lead complex, fast‑moving assignments often working alongside legal teams to provide evidence, or to help their clients defend positions in disputes. No two cases are the same.”
Dominc Dumville, Restructuring and Insolvency Partner at Mercer & Hole comments: “We are delighted to welcome Will to the team. His expertise and knowledge will help to provide the best outcomes for our clients, especially those with complex cases where water-tight evidence is needed.”
Mercer & Hole has 27 partners and over 250 staff across its offices in London, St Albans Rickmansworth and Milton Keynes.
