Preheat oven to 375°F (190°C).

In a large bowl, combine flour, oats, salt, and sugar.

Cut in shortening using a pastry blender or your fingers until the mixture resembles coarse crumbs.

Gradually add cold water, mixing with a fork until the dough comes together.

Turn the dough out onto a lightly floured surface.

Roll out the dough to about 1/4-inch thickness.

Cut out rounds using a glass or cookie cutter.

Place the oatcakes on an ungreased cookie sheet.

Bake in the preheated oven until golden brown, approximately 20 to 25 minutes.

Let cool slightly before serving.