It looks like a Japanese Quince (Chaenomeles japonica) which is a bush rather than the usual type you would use to make jelly. That species, a tree is simply called a Quince (Cydonia oblonga).

You can still use the Japanese one though, just google Japanese Quince recipes.

Many thanks. Now for my first attempt at making Quince Jelly

The quinces are ripe when you they can be removed from the bush without tugging. You have to keep a close watch as they drop if not picked as soon as they are ripe.

Thanks. I'm really new at this so appreciate all the help I can get.

Another way to identify them is that proper quinces have a really strong perfume. I can smell the fruit on my tree as I walk past it, several feet away. The Chaenomeles fruit, although fragrant when cut, don't gve off such a perfume. Qunices, too, are more chunky pear shaped, with a definite narrowing at one end. Phil