The John Crace article on the Brian Langstaff report ends this way

Sunak ended with the inevitable. “We must make sure nothing like this ever happens again.” Except it will. It’s all too easy for politicians to apologise for the guilt of their predecessors. But it’s odds on there’s another scandal bubbling below the surface right now in which the state is implicated. And in 10 or 20 years’ time, the prime minister of the day will be saying sorry.

Perhaps Ukraine then? But John's probably right, there'll probably be a several scandals simmering along that we don't even know about presently.