Poverty in the United Kingdom is the condition experienced by the portion of the population of the United Kingdom that lacks adequate financial resources for a certain standard of living, as defined under the various measures of poverty.

In English and British history, poor relief refers to government and ecclesiastical action to relieve poverty. Over the centuries, various authorities have needed to decide whose poverty deserves relief and also who should bear the cost of helping the poor. Alongside ever-changing attitudes towards poverty, many methods have been attempted to answer these questions. Since the early 16th century legislation on poverty enacted by the Parliament of England, poor relief has developed from being little more than a systematic means of punishment into a complex system of government-funded support and protection, especially following the creation in the 1940s of the welfare state.