Rabbi Jacob Ebrahimoff, head of the Independent Jewish Day School in Hendon, will be in charge of an additional school from September.
He will be spending half his week in Israel as the new executive head of the King Solomon School near Herzliya, which will be relaunching as a British international school.
"We'll be teaching the British national curriculum," said Rabbi Ebrahimoff, who has been Independent head for three years.
"The idea is to bring to Israel the level of excellence and high achievements that in the UK we are extremely proud of." He looked forward to experiencing the "innovative" approach to education in Israel.
Its Jewish education will be modelled on the broad-based Orthodox approach of mainstream Jewish schools in the UK.
His time will be divided between the two schools
When he is in Israel, the new IJDS deputy head, Mandy Berkman, will be acting head of the Hendon school.
Rabbi Ebrahimoff said that while "there is no formal link between the schools, a link could be productive".