The prime minister has finally grasped that Downing Street must control the narrative. But is it too late to undo this summer’s self-inflicted damage?

Sue Gray’s departure matters. But not in the way some may assume. Gray became famous because of three things: her Partygate investigation under Boris Johnson, her recruitment to Keir Starmer’s team in opposition and for having once run a pub in Northern Ireland. It all turned her into just about the only British civil servant whom people beyond Whitehall might recognise on the news.

It was therefore predictable that her fall from power would also be depicted in personality terms. Sure enough, Gray’s original ousting in October was attributed to a turf war with Morgan McSweeney, now her successor as Downing Street chief of staff. Or to the fact that Labour special advisers were disgruntled over their pay differentials. Gray’s final exit this week was also reportedly triggered by Starmer’s frustration that she had not started work on the job to which he demoted her five weeks ago.

Martin Kettle is a Guardian columnist