When Lisa Osofsky’s five-year tenure as director of the Serious Fraud Office ends in August, many will view it as the conclusion of a period at the U.K.’s top white collar crime enforcement agency marked by uncertainty and notable failures.

Osofsky, who succeeded Sir David Green in 2018, does have her sympathisers. It is an “extremely difficult job” that involves balancing “a tight budget with huge pressure to conduct massive investigations”, one partner said; a role that tends to come with the added burden of “undoing what their predecessor did”.