During the Televised Leader's Debate on 19th November 2019, the Conservative Press Office rebranded themselves as FactCheckUK.
They did not buy this web domain - this site was created by a private individual with no political affiliation.
Please go to Tactical Vote to decide how to vote tactically to stop a party that has done far worse things than forget to register a domain name.
For more details about tactical voting (with other tactical voting sites), read this article.
James Cleverly is "absolutely clear that [FactCheckUK] is a Conservative Party website". Maybe he should check his facts?