The Brexit fallout has cast a shadow over UK Plc but the ad industry’s burst of creative output offers hope. That Amazon TV ad with the priest and the imam, created by four-year-old independent agency Joint London, is airing around the world. Other agencies are exporting their work. Adam&EveDDB is to open an office in America after winning Samsung as a client. Another leading agency, The&Partnership, has landed Toyota’s account across Europe.