"News of the first sighting of the Asian Hornet on a cauliflower in Bury, Lancashire, has prompted local bee-keepers to take action to protect these important species from the hornet which can swiftly wipe out colonies of honeybees. According to the National Bee Unit’s ‘Bee Base’ the Asian hornet is smaller than our native hornet. Adult workers measure from 25mm in length and queens measuring 30mm. ....."
Read more here: Telegraph and Argus