While Keir Starmer was trying to enjoy a family holiday in Madeira over the new year, Elon Musk was trying to spoil it. The world’s richest man has been using X to lob insults and slurs in the direction of the prime minister, while teasing the prospect of donating tens of millions of dollars to the Reform UK party.

This potentially gamechanging money has meant his comments – which have been compared to those of a “pub bore” by some users on his own social media platform – have provoked (arguably unmerited) political reaction and media debate. So what issues have been enraging Musk?