Archibald Ingall Stretton has made two appointments to its team. Jamie Warren joins the agency's development team as executive technical director after leaving Bernard Hodes Group where he worked with companies including MTV, Ladbrokes, Betfair, Marks & Spencer and the BBC. He will keep the development team up-to-date with the latest technologies and processes. Liz Childerley joins as business development director, having previously ran business development at OgilvyAction and WWAV Rapp Collins. She will head up all activity on lead generation, procurement tenders, intermediary relationships and public relations.