By Maria Ward-Brennan Allianz has lost an appeal in a major Covid-19 business interruption claim in a decision that looks set to close a chapter of major court battles linked to such disputes. The issue of whether firms could make a business interruption claim with their insurers as a result of losses during the Covid-19 pandemic was broadly settled by the Supreme Court back in 2021. It ruled it that ‘disease’ and ‘prevention of access’ clauses in companies’ insurance policies provide cover in the circumstances of Covid-19. However, there were several gaps that weren’t covered in the judgment …