Latest figures show that the UK child poverty rate is now higher than at any time in the last 20 years.
Research from the Joseph Rowntree Foundation (JRF) indicates that 4 million children were living in poverty in 2017-18, up by 400,000 in the past five years.
Whilst in total 14 million people across the UK currently live in poverty, 56% of them are in a working family, compared to 39% two decades ago. The report also indicates regional differences with the worst figures seen in London, the North, Midlands and Wales and the lowest rates in the South of England, Scotland and Northern Ireland.
JRF executive director Claire Ainsley said: "The new government has an historic opportunity as we enter the 2020s.
"Past successes in recent decades show that it is possible for the UK to loosen the grip of poverty among those most at risk, but this progress has begun to unravel and it will take sustained effort across the country and throughout the governments of the UK to unlock poverty.
"It's not right that so many are unable to build a firm foundation to their lives because their jobs are insecure or they can't find a home they can afford. Without a better deal for working families, and a social security system that provides a public service for all of us, the UK faces further division and deeper poverty."