For one thing, there's nothing remotely left wing about Starmer's Labor government. Labor is firmly a center-right party. So were the Blair and Brown governments. So we've had unbroken right-wing rule in the UK since Thatcher was elected almost 50 years ago.
If Jeremy Corbyn had been elected, he may well have been a left-wing PM but he wasn't. Instead, the threat of that caused Labor insiders to engage in a vile character assassination scheme that brought Keir Starmer to power, all to support US imperialism. There's nothing remotely left-wing about that.