Nigel Farage accused Labour of being "obsessed" with Reform UK after a series of attacks on the insurgent party. Sir Keir Starmer's party has turned its fire on Reform in recent weeks.
In a post on X, the Reform leader said: "The Labour Party have posted about Reform over 40 times on social media in the past week. Obsessed." It comes after the Prime Minister targeted Reform as Labour kicked off its local election campaign earlier this week.
Sir Keir said: "They say they want to run the country. They can't even run themselves. You can literally fit their MPs now in a back of a cab, but they still don't know where they're going.
"They talk the language of workers' rights. They talk it all right - online, sometimes on the doorstep.
"But what do they do? They voted against banning hire and refire. They voted against scrapping exploitative, zero-hour contracts. They voted against sick leave and maternity pay. That's what they do. And what about the NHS? They want to charge people for using our NHS.
"They claim to be the party of patriotism. I'll tell you this: there's nothing patriotic about fawning over Putin."
Mr Farage, the MP for Clacton, said at the time it showed Labour was "genuinely scared" of Reform.
Labour also released attack ads last month claiming Reform would charge people to use the NHS.
Mr Farage has insisted Reform wants a "better, cheaper funding model".