In 1929, just prior to the rioting over Zionist activity at the Wailing Wall, the deputy High Commissioner, H.C. Luke, organised a lengthy meeting between Arab and Jewish Agency leaders in attempt to calm the situation. The Arab delegation was led by Jamal. The hoped for joint statement did not materialize. Following the riots, in October, he was leader of a delegation sent to London for meetings at the Colonial Office. This was in his capacity as Secretary to the Supreme Muslim Council, an organisation which had been set up by the British, and was led by Hajj Amin Husseini, to whom he was related both through his father and mother. It was the first Palestinian Arab delegation to go to London since 1922 and included Adil Arslan and Izzat Tannous. One of its objectives was the setting up of an information center in London.