Damage to fruit on pear tree

This is most likely to be pear midge. The maggots will make the fruit grow faster, making them mishaped. Pick up any fruit that falls to the ground. If the ground is cultivated, hoe the soil regularly. Spray at white bud in the spring.

It could be codling moths. I had similar on my apple tree - losing most of them but since putting up a codling moth trap (£8 ish in most garden centres) and also putting a grease band round the trunk I've had an ace harvest every year.

Sorry Suzannemitc,
Codling moths are not known for attacking pear trees, grease bands are for the winter moth which also attacks apple trees.