Buglife says “One out of every three mouthfuls of our food depends on pollinators. It is almost impossible to over-emphasise the importance of the service pollinators perform for us.
Many plants rely on insects to pollinate their flowers and so complete their reproductive cycle – most plants cannot set seed without being pollinated (receiving the pollen, usually from another flower). Without bees, hoverflies and other insects visiting flowers, there would be no strawberries, apples, avocados, chocolate, cherries, olives, blueberries, carrots, grapes, pumpkins, pears, plums or peanuts…. And very few flowers in our gardens and countryside.
It is estimated that 84% of EU crops (valued at £12.6 billion) and 80% of wildflowers rely on insect pollination…”
https://www.buglife.org.uk/bugs/featured-bugs/pollinators/