The High Court’s Norfolk[1] decision has sat uneasily with some in the coronial law community. Although coroners have a statutory duty to investigate a cause of death, the effect of the Norfolk case is that if an investigation into a fatal incident has been undertaken by one of the UK’s three Accident Investigation Branches (‘AIBs’)[2] the coroner is obliged to accept, wholesale, the conclusions of that earlier AIB investigation.
As the High Court emphasised in Norfolk a coroner will comply sufficiently with their statutory duties by treating the findings and conclusions of the report of an independent AIB as the evidence as to the cause of a fatal accident.
The thorny issue of whether this is an obiter statement or part of the ratio decidendi of the decision has, however, continued to be debated. In the Shoreham Aircrash ‘Sussex’ case [3] the Senior Coroner neatly sidestepped the argument by saying that, even if this part of the judgment was merely obiter, she was still going to follow it, particularly as it was, on any analysis, strong guidance by a court that included the Lord Chief Justice (‘LCJ’). However, that issue has now been put beyond question, having been fully argued before the court in this most recent MAIB case.
Mr Justice Eyre has now held that the determination in Norfolk that, as a matter of principle, there could be no public interest in the duplication of investigations, was a necessary step in the court’s reasoning and so was ‘clearly’ part of the ratio decidendi of Singh J’s Norfolk judgment (with which the LCJ agreed).
As a consequence, the main challenge to the Norfolk decision raised in the present case: that it was unfair to put the MAIB report before the jury and not allow further questioning of it, was dismissed. Furthermore, an additional multi-pronged attack on the MAIB investigation (as being incomplete, flawed or deficient) and on the coroner’s ruling (as being inadequate and unlawful) also failed on every ground.