Poverty among working class households in interwar London is re-examin
ed using records from the New Survey of London Life and Labour, 1929-3
1. Alternative poverty lines are constructed to estimate the number of
households in poverty including, and excluding, the social security b
enefits paid during the interwar period. The interwar social security
system is found to deserve greater credit for alleviating poverty than
is often recognised. Also, it is argued that the post-Beveridge socia
l security system. if applied in the interwar period, would have furth
er reduced poverty but would not have eliminated it.