Having worked as a chef, researcher, and farmer, Ogilvy now started his own advertising agency with the backing of Mather and Crowther, the London agency being run by his elder brother, Francis, which later acquired another London agency, S.H. Benson.
Setelah bekerja sebagai juru masak, peneliti dan petani, Ogilvy kini memulai agensi periklanannya sendiri dengan dukungan Mather and Crowther, agensi London yang dikelola oleh kakak laki-lakinya, Francis, yang kemudian mengakuisisi agensi London lainnya, S. H. Benson.