Dunner also subsequently served as European President of Agudath Israel, the main organisation representing the political interests of azionistic Orthodox Jews. He was an unbending supporter of the right of Jews to practise "shechita" in the UK, in the face of numerous attempts by animal rights groups to ban it. Typically, he argued that if kosher meat had to be imported, the costs would become so prohibitive that the largely poor Orthodox communities of Stamford Hill and beyond would effectively be forced to become vegetarians.