The group has also threatened litigation to force ministers into an inquiry, including a pre-action letter of judicial review by the High Court of Justice, as they argue that the government "serially failed to take reasonable steps to minimise the effects of the pandemic, leading to massive, unnecessary loss of life". They have dismissed claims by Prime Minister Boris Johnson that ministers "did everything [they] could ... to minimise loss of life and to minimise suffering" as "an insult to the memory of everyone we have lost and a kick in the teeth for bereaved families who deserve acknowledgement that our loved ones were failed". Lawyers representing the group have acted in major public inquiries including into the Hillsborough, Grenfell Tower and Manchester Arena disasters.