Evidence informing the UK's COVID-19 public health response must be transparent. Issue 10229 (28th March 2020) - Alwan, Nisreen A; Bhopal, Raj; Burgess, Rochelle A; Colburn, Tim; Cuevas, Luis E; Smith, George Davey; Egger, Matthias; Eldridge, Sandra; Gallo, Valentina; Gilthorpe, Mark S; Greenhalgh, Trish; Griffiths, Christopher; et al.