I started with a basic scone recipe from "The Twelve Teas of Christmas" by Emilie Barnes (page 23), but this is far from it. I began tweaking the recipe according to my own preferences, after having other scones that were too sweet, not sweet enough, too dry, too soft, not flavorful enough, etc. This is where I've settled--for now! They're quite consistent, and consistently loved.
For a stronger orange flavor, you can add 1-2 tsp. orange extract and/or orange zest. You can also add a frosting or glaze made from orange juice and confectioner's sugar. Some extract, orange juice concentrate, and/or orange peel would add more flavor to that, too.
I tend to make a large amount because I make them for tea parties or for my large family, but you can easily halve the recipe. Serve with clotted cream (real or fake) and jam, but they're also great with butter, or plain. I make a clotted cream substitute by softening butter and cream cheese, then mixing them in a ratio of 1:1. Yum!