Starmer aide Morgan McSweeney under fire after Labour welfare rebellion | Morgan McSweeney

Being the prime minister’s right-hand man is a position of extraordinary power and privilege. But when things start to go wrong, you’re directly in the line of fire. So has found Morgan McSweeney, the political mastermind credited with helping Keir Starmer win his election landslide, in recent days as the Labour party has collapsed into moral fury over planned welfare cuts.

The softly spoken Irishman, now Starmer’s chief of staff, has become the lightning rod for the frustration of many Labour rebels who backed a wrecking amendment designed to blow up the flagship welfare bill next week.

Many of them blame McSweeney and his political operation for ignoring Labour MPs to such an extent that they missed the strength of feeling over the disability benefit cuts and just how far the…