“…ving as it does the exercise of compulsory state power, was described by Mr Justice Hoffmann in Mackinnon v Donaldson, Lufkin & Jenrette Securities Corporation [1986] 1 Ch 482 at page 494 as “an exercise of sovereign authority to require citizens and foreigners within the jurisdiction to assist in the administration of justice”.…”
“…Coming closer to the present context, in Mackinnon v Donaldson, Lufkin and Jenrette [1986] 1 Ch 482, the Court discharged an ex parte order and subpoena requiring an American bank, not a party to the action, to produce books and other papers held at its head …”