The Commons Public Administration Committee chairman Bernard Jenkin, said: "This underlines the all-too-obvious truth that investigations into ministerial misconduct are not an appropriate role for the Cabinet Secretary to undertake.
"Given time, attention and with his relevant experience, Sir Alex Allan (a former chairman of the Joint Intelligence Committee) might well have uncovered the truth."
More top news
A fraudster who pretended to be in a coma for two years was caught by police going on shopping trips and holidays with his family.
Actress Renee Zellweger said she looks different because she is now living a "happy and more fulfilling life".
Team member Richard Pryor said nobody had been injured during the team's practices, though "quite a bit of damage" has been done to the pub.