Britain is experiencing a tomato shortage due to crop disruptions in southern Europe and North Africa, further aggravated by lower winter production in UK and Dutch greenhouses due to high energy costs. The situation is expected to persist for a few weeks. Supermarkets, including Tesco and Sainsbury's, are managing the supply chain issues and working with farmers to ensure a wide range of fresh produce. The shortage is more severe in winter months when the UK imports 95% of its tomatoes and 90% of its lettuce.