Three top five UK firms are facing renewed pressure from Enron’s bankruptcy examiner to disclose sensitive client information – despite escaping censure in a major report in March into the energy giant’s 2001 collapse.

Slaughter and May, Linklaters and Freshfields Bruckhaus Deringer were all named in a new ruling on 27 February from the bankruptcy court of the Southern District of New York, granting permission to subpoena advisers for more documents and oral examination.