Mr McNicol’s visit included meetings with leading Israeli Labour figures, sessions on entrepreneurial skills with Israeli and Palestinian youngsters, and tours of the Old City and Knesset.
Mr McNicol said: “I was deeply honoured to lay a wreath at Yad Vashem on behalf of the Labour Party; vowing never to forget the darkest moment in human history.
"It's always a pleasure to meet with colleagues from our sister party and I was delighted to meet the new Israeli Labor Secretary General, Eran Hermoni, as well as International Secretary MK Hilik Bar and MK Michal Biran.
“I'd like to thank LFI for organising this visit and for the vital work they do to bring our two sister parties together in a spirit of friendship and solidarity."
Jennifer Gerber, LFI director, said: “I'm delighted to bring Iain McNicol to Israel to demonstrate more fully the complexities of the region.
“For supporters of Israel in the Labour Party, it was incredibly heartening for Iain to visit with us and re-affirm Labour's commitment to a two-state solution."