The Serious Fraud Office has been hit with two reports slamming its conduct on the same day the Court of Appeal overturned a conviction related to the agency’s ill-fated Unaoil investigation.

At the centre of it all is Lisa Osofsky, the agency’s director, whose actions contributed to overturned convictions, according to the independent report into the SFO’s Unaoil investigation by former director of public prosecutions Sir David Calvert-Smith.