Brogdale, which is the home of the National Fruit Collection, will identify most varieties of apple. I don't know whether their collection includes 'wild' varieties. I assume that they would know.
The service costs £20 per apple. Full details are here:
You could easily send them an Email, to see what they know about wild apples.
A couple of years ago, Brogdale made a special offer to members of the old gardening forum, on the BBC website. They offered to identify members' apples, from photos, for free. I sent in a dozen photos of some old varieties, and got the answers.