Rubuta ci gaba don wannan sakin layi - Bayan yakin, bayan ɗan gajeren lokaci zuwa aikin jarida, Young ya koma ga Secret Intelligence Service (SIS) a matsayin shugaban tashar Vienna, inda ya shiga cikin masu aiki a kudu maso gabashin Turai. A shekara ta 1949 an sanya shi shugaban sashin bukatun tattalin arziki na SIS (R6), wurin tuntuɓar su da Ma'aikatar Baitulmalin, Hukumar Kasuwanci da Bankin Ingila. A 1951 an nada shi mai kula da ayyukan SIS a cikin 'Yankin Gabas ta Tsakiya' wanda ya fito daga Maroko zuwa Afghanistan zuwa Habasha. A nan ya shiga cikin aiwatar da shawarar Anglo-Amurka don cire shugaban Iran Mossadeq da kuma mayar da Shah
Ka yi haƙuri. A cewar Cavendish Shah daga baya ya ce na Young cewa "A lokutan rikici shi ne mutumin da zai iya yanke shawara da kuma jefa hankali ga iska. Matashi mutum ne wanda ya yi imanin cewa abota tana yanke hanyoyi biyu kuma cewa Birtaniyya ya kamata ta tsaya tare da abokanta har ma da haɗarin ɓata wa wasu rai. " A cikin 1953 an sake kiran Young zuwa London don karɓar matsayin Daraktan Bukatun SIS kuma a cikin 1956, yayin rikicin Suez, an sake sanya shi a matsayin mai kula da Ayyukan Gabas ta Tsakiya. A shekarar 1959 aka nada shi mataimakin shugaban hukumar leken asiri. Rashin gamsuwarsa da gwamnatin Macmillan ya sa ya yi murabus a matsayin Mataimakin MI6 a 1961 kuma ya shiga kasuwancin banki.