Britain is reliant on Ukraine for sunflower oil and Russia for white fish so the future of a Friday night fish supper is in jeopardy.

Business leaders in the fish and chip industry are calling on the government to offer a “long-term strategy” to their food shortages crisis – or face a third of chippies closing.

The National Federation of Fish Friers (NFFF) has warned the four key ingredients that make up a traditional fish and chip meal are deeply affected by the on-going conflict between Russia and Ukraine – and are forcing shops to change their menus, increase prices, or in the worst instance, close down.

The UK is mainly reliant on Ukraine for sunflower oil. The NFFF has said 50% of oil used by British fish and chip shops comes from the war-stricken country – and alternatives like rapeseed oil and palm oil have shot up in price.

Up to 40% of cod and haddock comes from Russia – and Britain’s sanctions on Russian white fish will make these North Sea supplies scarcer and pricier.

Fertiliser for potatoes – mainly from Russia – have tripled in price. Flour, used for fish batter mixes, also hails from the region.

As a result, there is a global shortage of key ingredients, which means costs are surging, as profit margins dwindle.