That is Scab with a vengeance. About the best thing you could do is spray now with a systemic fungicide and forget about any fruit for this year. Remove and burn any fallen leaves and all the apples.
Then for next year, I would clear the area around the base of the tree and feed it with Maxicrop according to the info on the bottle.

Thank you so much,will do as you say and here's to many apple pies next year.

Having looked at the apple picture again, I am wondering if this is a Crab apple rather than an culinary one. In which case the fruit is normal size. Makes good Crab apple Jelly or Wine.