"The Conservative Party is socialist"
I went to have a look at their 2017 party manifesto. Keeping taxes as low as possible, increasing trade and replicating all EU free trade agreements (the EU is a neoliberal globalist project), reducing the volume of regulation, "capitalism and free markets remain the best way to deliver economic prosperity"... also, aren't the Tories planning to privatize the whole of or at least parts of the British health care system? Maybe they are more left-wing in practice, but at least on paper, they are not particularly socialist (by European standards).
Did he even elaborate on what he meant afterwards? Was he referring to the U.K. government's economic policy, their immigration policy or something else?