https://www.sciencedaily.com/releases/2022/07/220714145046.htm

Scientists conclude that factors such as Brexit, a move to plant-based diets and any further disruption from the COVID-19 pandemic will be major influences on our food supply and in-turn the range and level of micronutrients available to people through their food.

The UK is not self-sufficient in several key vitamins (A and C) and minerals (calcium, zinc and iron). We rely on imports, rather than domestic produce, to provide enough of these micronutrients to ensure the population can receive their recommended daily allowance.