New home with old fruit trees, how to tackle

Hi all, I'm Matt and my wife an I moved in to a new house in December 2015, the house has got one very large apple tree, a plumb tree and two pear trees in the garden all of which looked to have had some work in the past but look to have been neglected I'm the last 3 - 4 years.

Firstly the apple tree, the year we moved in there wear apples all over the ground under the tree thay had just been left we got around 5 heaped wheelbarrows full off the ground however this year I would be surprised if if we got enough to fill one.

Unfortunately I didn't get around to identifying it when it had spokeswoman and leaves in summer although might be able to find a picture or two somewhere, all I know is they are eating apples.

A friend suggested I would need to cut the tree back and since doing a little research, as I understand, for the amount I need to remove I would be better doing the work in summer however what I would be interested to know is is there anything I can do this time year to help this year's yield???

From some of the YouTube videos I've seen they suggest I could remove some branches from the middle of the tree, any branches that are rubbing, dead, or growing towards the middle of the tree. But best to leave the water sprouts at this time. Sound about right???




I have also noticed a number of large splits in the bows of the tree, any suggestions what these are and what I could do to prevent or help repair these splits.






I also have these pear trees, again after any advice as to what I might need to do to them at this time of year.



Any help would be appreciated.

Thanks Matt