At least 1500 species of insects pollinate plants in the UK including bumble bees, the honey bee, solitary bees, hoverflies, wasps, flies, beetles, butterflies and moths. All have complex life cycles and specific needs. Most require food in the form of pollen and nectar, and need a home for shelter and nest building. The number of insect pollinators is highest in the summer coinciding with peak plant growth and supplies of nectar and pollen.
As a result of the way the landscape has changed over the last 50 or more years, not all insect pollinators can readily find the food and shelter they need.