Iestyn has many years of experience providing competition economics advice to clients in relation to pricing and non-pricing conduct as well as mergers and market investigations across a diverse set of market settings. His experience encompasses economic advice for clients on matters involving margin squeeze, discriminatory pricing, predation and selective price cutting, as well as cartel agreements, cover pricing, information sharing and restrictive contracts, for example. Relevant merger experience includes advising during European Commission Phase I and Phase II investigations of horizontal and non-horizontal mergers, as well as on transactions scrutinised by national authorities in the UK and elsewhere. Iestyn regularly prepares expert opinions and reports for clients involved in litigation, and in other proceedings before tribunals, courts and regulators.
During the early part of his consulting career Iestyn specialised in energy cases, and he continues to work on assignments for clients competing in liberalised industries and at the interface with natural monopoly. This experience has extended across the energy, telecoms, transport and postal sectors.
Prior to his consulting career Iestyn was an academic economist, specialising in the study of vertical and other contractual relationships.
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