Boris Johnson has been given just three weeks to deliver justice in Britain's longest-running scandal.
Tory and Labour MPs have united to tell the PM he needs to decide on a medal and wider recognition for survivors of Cold War radiation experiments by July 21 - when the Houses of Parliament break up for summer.
They want measures in place before the 70th anniversary of Operation Hurricane, the country's first atomic bomb, on October 3, to ensure its veterans are honoured before Remembrance Sunday in November.