Ian Clemmence

Ian Clemmence

Partner, PwC United Kingdom

Ian is a Partner in PwC’s London based Forensic Services practice, where he is responsible for leading a range of valuation, litigation dispute and investigation cases. Prior to joining PwC, Ian worked for a leading economic consultancy firm in London. He was also a Manager in the Technology, Media and Telecommunications division of Deloitte, where he completed his ACA qualification. Ian holds a degree in Economics from the University of Durham.

Ian has over nineteen years of disputes, audit, corporate finance, investigation, financial modelling, report writing and statistical analysis experience. He has managed the production of over 100 expert reports, focused on a range of issues across multiple industries and territories, often with a particular focus on energy, oil and gas and construction, including claims arising out of investment treaties. Ian has been appointed as expert on a number of matters (both litigation and arbitration) and given oral evidence on a number of occasions, mostly recently testifying in an ICC arbitration. Ian also has experience of mediations, managing global investigations, corruption reviews and audits under UK GAAP, IFRS and US GAAP. Ian has been engaged to act as expert in a number of forums, including the UK High Court and under ICC Rules.


  • Forensic services disputes
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