It was surely intended as a gesture of his sorrow at her enforced departure from government.

Instead of sending the usual typed letter to a resigning Minister, Sir Keir Starmer chose his fountain pen yesterday to bid farewell to Angela Rayner.

But, unfortunately for the Prime Minister, his 286-word, handwritten missive revealed rather more.

According to respected forensic handwriting expert Ruth Myers, the strokes of his pen show a man who can be 'untrustworthy', 'two-faced' and subject to mood swings.

Aiming to be 'top dog' and competitive, he can also be 'easily angered at times' and 'likes to control'.