He told Sky News on Sunday that it was a matter of “deep regret” that he failed to do so.
Asked if he was sorry about missing the deadline, Johnson said: “Yes, absolutely.”
Johnson’s plant to leave the EU on Oct. 31 with or without a divorce deal was blocked by Parliament, which required him to seek an extension. It had been the central plank of his platform in the party leadership competition that brought him to power in July. The EU has granted a Brexit extension until Jan. 31.
Johnson faces a national election on Dec. 12 in his bid to get a more Brexit-friendly Parliament.