I'd always regarded Laurel, whichever it is, as a useless plant but on sunday noticed it was receiving the attention of a lot of bees and wasps. This included my first Bombus hypnorum in my garden! The animals were visiting the base of the underside of the leaves which, as shown above, have 2 pairs of glands either side of the main rib. The gland received much licking and obviously produce something to the liking of these creatures. Sugar solution or waxy substances come to mind. Any ideas?