A Christian charity is urging the government to act quickly, as the continued rise in food prices drive up world hunger statistics.
A total of 15 different international aid organisations are warning the ongoing war in Ukraine is causing suffering far beyond its borders, including the impact of rising food and energy costs.
Christian Aid are urging the UK Government to play a leading role in helping people around the world facing hunger and malnutrition.
Patrick Watt, Christian Aid's interim Chief Executive who signed an open letter alongside the CEOs of Save the Children, the British Red Cross and other aid leaders, is demanding the UK Government matches "the spirit of the British people in tackling rising global hunger."
Patrick said: "The war in Ukraine has created collateral damage for fragile and war-torn countries like Yemen and Lebanon that rely on the region for resources, not least wheat imports.
"The public response to the humanitarian needs in Ukraine is unprecedented. The UK Government must now match the spirit of the British people in tackling rising global hunger.
"We cannot accept the false choice of responding to Ukraine and fulfilling our responsibilities to the poorest people facing hunger. This crisis is global.
"The time for the UK Government to act and match words with funding is now. Millions will be at risk if we don't."
The intervention comes as the World Bank calculates there could be a 37% jump in food prices because of the conflict.
The international aid charities say the knock-on effects of soaring prices and broken supply chains for grains, cooking oil, fertiliser and fuel is exacerbating pre-existing hunger crises for many countries, including in the Horn of Africa, the Sahel, and the Middle East.
In an appeal to the UK Government, the international aid community is seeking new funding and action to prevent famine and to keep food affordable and stabilise prices, a reversal of cuts to international aid and a commitment that funding for Ukraine is in addition to existing UK aid commitments.