Crab Apple Blossom

I made some "Crab Apple Jelly" last autumn from the tiny apples from this tree.
The recipe is far older than I am (thanks mam). 
So this year, I will have another go, if there is another good crop like last year.
Having pruned the tree back to nothing more than a stump several years ago,  its amazing is still thriving - given my lack of Gardening skills.