[12][non-primary source needed] He states that he is a friend and admirer of Israel, "whose pluralist ethos will be fulfilled when there is an eventual two-state solution with a sovereign Palestine".

He told Liam Hoare, writing for The Forward magazine in September 2015, that "the left has incorporated the attitudes of the nativist far-right.

[15] When interviewed by politics academic Norman Geras in 2003, Kamm said that he wrote to "express a militant liberalism that I feel ought to be part of public debate but which isn't often articulated, or at least not where I can find it, in the communications media that I read or listen to" and that he felt that "the crucial distinction in politics is not between Left and Right, as I had once tribally thought, but between the defenders and the enemies of an open society.

"[5][self-published source] Kamm has been accused of expressing anti-Catholic views for his remarks towards Catholic Labour MP Rebecca Long-Bailey.

[16][17][18] In 2007, he criticized Wikipedia, saying that its articles usually are dominated by the loudest and most persistent editorial voices or by an interest group with an ideological "axe to grind".

[20][non-primary source needed] Kamm has described his marriage as "caring but unsuitable", and after it ended he was a single parent for their two young children.