II. Ex parte Pinochet: Lacuna or Leap?

Abstract

The Lords were not lost in admiration of section 20 of the State Immunity Act 1978. Lord Browne-Wilkinson described it as “strange” and “baffling”. It is certainly true that (as Lord Browne-Wilkinson continued) “Parliament cannot have intended to give heads of state and former heads of state greater rights than they already enjoyed under international law”.1 Nor was it intended that their rights should be inadvertently curtailed. The State Immunity Bill originally introduced into the House of Lords in 1977 would, by reflecting in UK statute law the European Convention on State Immunity2 make huge inroads into absolute sovereign immunity—tottering but not yet demolished through the repeated onslaughts of Lord Denning. The European Convention was however “essentially concerned with ‘private law’ disputes between individuals and States”.3 It was not intended to have any application to criminal proceedings—in so far as lawyers in 1977 even contemplated criminal proceedings in domestic courts against foreign States in their public capacity. It did not deal with the personal privileges or immunities of heads of state. There were no ready-made treaty rules on heads of state and no clear customary rules either.4