McDonald's strength of feeling shows he could not keep quietpublished at 11:56 British Summer Time 5 July 2022
Ione Wells
Political correspondent, BBC News
Lord McDonald's letter is pretty unprecedented.
While he is no longer in the civil service top officials tend not to speak on the record, except in exceptional circumstances, about their time there because they are bound by their loyalty to the system as impartial public servants.
But Lord McDonald's strength of feeling in his letter shows he clearly could not keep quiet about this, nor No 10's initial denial that any formal complaints were made.
This has heaped fresh pressure on Boris Johnson from his own MPs - including some ministers who feel they have been, in some cases, led up a hill only to be marched back down it again by Downing Street.