(i) The vast mass of one room house occupied by the poor was seen as a serious threat to public health.
(ii) Cities were overcrowded, badly ventilated and lacked sanitation.
(iii) There were worries about fire hazards created by poor housing.
(iv) There was a widespread fear of social disorder, especially after the Russian Revolution in 1917.
(v) Workers' mass housing schemes were planned to prevent the London,s poor from turning rebellious.
