Posted: 19/09/2017 at 09:20
It's more likely frost problems which either kill the flowers before they've been pollinated or else make it too cold for the pollinators to fly and visit your blossom.
If the other trees are producing fruit it may just be that they flower at a slightly different time and escape frost problems or else they have other pollinator plants around them to attract the insects to lurk in their corner rather than yours. Try under planting yours with bulbs and early spring flowers which will provide pollen and nectar to feed the pollinators and entice them towards your fruit trees.
A mahonia shrub will provide food over winter and early spring and then snowdrops, crocuses, hellebores and narcissus will continue the food supply and encourage pollinators to hang about for your fruit trees.