Byrne is the chair of the APPG on Inclusive Growth, formed in July 2014 upon the request of the Archbishop of Canterbury, with the aim of finding a new consensus on inclusive growth to ensure the benefits of growth are enjoyed by all sectors of society. He is also chair of the APPG on Children of Alcoholics, which has produced a manifesto in support of the estimated 2.5 million children of alcoholics who live in the UK. Byrne himself was one of these children and set up the APPG after speaking publicly about his father's condition in 2015. Alongside Chuka Umunna, Byrne made an official visit to Israel in October 2012 as part of the LFI's UK-Israel Economic Dialogue group. Byrne is a member of the Labour Friends of Israel.