Holding pictures of their loved ones lost, members of the "Covid-19 Bereaved Families for Justice" campaign group line up outside an inquiry in central London, which will probe the UK government's handling of the coronavirus pandemic. The investigation has been mired in controversy even before the first witness is called. Requests made by the inquiry chair for ex-PM Boris Johnson's unredacted WhatsApp messages prompted a legal challenge from the UK government, and bereaved families have condemned the decision not to include any of their testimony in the investigation's first six-week phase. "Our evidence, we think, is crucial" says Amos Waldman, whose grandmother died of Covid-19 in April 2020. IMAGES AND SOUNDBITES