Rubuta ci gaba don wannan sakin layi - A cikin 1921 Bradley ya sanya hannu don yin aiki a matsayin injiniya a Indiya a ƙarƙashin kwangilar shekaru biyu. A lokacin da yake a Indiya ya yi aiki a yankin Rawalpindi inda ya yi aiki a matsayin mai kula da babban bita. Yanayin aiki na ban tsoro da kuma karamin albashin da ma'aikatan suke karɓa ya dame shi. Da zarar ya koma Biritaniya a farkon 1923, ya shiga Jam'iyyar Kwaminis ta Burtaniya (CPGB), kuma ya zama dan gwagwarmayar kungiyar kwadago kuma mai kula da shago a cikin aikin injiniya. Ya taba jagorantar yajin aiki na nasara jim kadan kafin yajin aikin gama gari na 1926 United Kingdom
Ka yi haƙuri. A matsayin wani ɓangare na haɗin gwiwar CPGB da Tarayyar Soviet don horar da shugabannin kwaminisanci na Indiya da ke cikin Jam'iyyar Ma'aikata da Peasants, Bradley ya koma Indiya a cikin kaka na 1927, yana tafiya tare da ɗan'uwansa mai fafutuka na CPGB Philip Spratt zuwa Bombay (yanzu Mumbai). Ba da daɗewa ba bayan haka, Bradley ya zama memba na Kwamitin zartarwa na duka All India Trade Union Congress, da Workers and Peasants Party, kuma Mataimakin Shugaban sabuwar ƙungiyar ma'aikatan masana'antar da aka kafa wanda ya kai membobin 50,000 a ƙarshen 1928. Ya kuma rike wasu mukamai a kungiyoyin kwadago da aka sadaukar da ma'aikatan jirgin kasa.