This is raw, uncured hind leg pork, appearing pale pink/beige like a pork roast. It has not been salted or smoked, offering a natural pork flavor. Raw Gammon Joint
The lower leg, fatter, easier to carve, and picturesque.
"Uncooked" can mean several different things depending on your cooking method.
Avoid "ham and water product." Only purchase items labeled simply "ham" or "ham with natural juices" to avoid watery, spongy, or bland meat.
Look for a moist, soft-to-the-touch joint. If it feels tough, it is too old.