The Attorney General helped to write a handbook on fighting “Israeli apartheid” in his previous career, The Telegraph has discovered.

Lord Hermer, Keir Starmer’s legal chief, contributed a chapter to the book in which he laid out the ways in which “Palestinian victims” could use UK courts to sue companies that sold arms to Israel.

He said that lawyers in the UK were in “a much better position” to take such action than those in America.

The book’s purpose is described in its introduction: “It is our hope that this book will prove useful in the fight against Israeli war crimes, occupation and apartheid.”

The text, entitled Corporate Complicity in Israel’s Occupation, drew together contributions from pro-Palestinian lawyers and academics including Lord Hermer, who is now the UK’s chief legal adviser.