For the biscuits: Preheat the oven to 400 degrees F.
Place the self-rising flour in a large bowl and toss with the cheese and ham. Grate the butter into the flour mixture. Pour in the buttermilk and mix gently with a wooden spoon. Once the dough comes together, turn it out onto a floured surface, divide it into 8 equal balls and pat them down lightly.
Put the balls in a cast-iron pan or on a baking sheet sprayed with cooking spray. Bake until brown, 20 to 25 minutes.
For the butter: In a bowl, mix together the butter, honey and mustard.
When the biscuits are done, brush some of the butter over the tops. Serve the biscuits with the remaining butter and the preserves.