The Government has argued that too much time has passed to allow a fair trial over alleged atrocities by British authorities in Kenya in the 1950s.
Guy Mansfield QC said the Foreign and Commonwealth Office faced "irredeemable difficulties" with witnesses and documents to defend the claim.
Without those witnesses, and indeed with the necessarily limited recollections of those who do survive, the very complicated and difficult task of determining the competing factual positions cannot be fairly conducted.
There is a dearth of evidence which can be given as to what was in people's minds when they made decisions and sent or read telegrams or attended meetings or were told of matters or visited places.
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The brother of a taxi driver killed alongside the Afghan Taliban leader has asked police to investigate his sibling's death.
The girl's injuries are not thought to be life-threatening.
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