Not on a Saturday 
! Never prune an apple tree on a Saturday. Oh, I should have forewarned you. Saturday? Oy vey 
. Okay, that should be fine, Saturn is the god of agriculture, among other things, so you should be alright.
I see you’ve taken down the leaders. The big tall ones. It’s an old tree it seems with lots of whips that have formed leaders. I would be gentle with it from herein. Next year, take those leaders right to the joints, leaving the outward branches to strengthen up. I suspect it is a tree that is overshadowed by the neighbour’s tree? That’s why it is possibly shooting its leaders up so high?
There’s a few crossovers that are pointing towards me that you have pruned that should be pruned to the base of the branch as they are coming into and across the centre of the tree. If you have the hwyl, do those now or just leave it until next Winter.
Next, some Summer pruning will invigorate it but I would see how the blossom is this year before doing that.
I see it is restrained by twine. Is that because it wants to lean toward the fence?