Season the flour with salt & pepper. Lightly dredge the fillet, shaking off any excess. Heat the olive oil in a heavy skillet over medium high heat. When the oil is hot, add the fillets to the pan and cook for 2-3 minutes on each side until golden brown. Remove the fillets to some paper towels to absorb any excess oil.

Add the olive oil to a skillet over medium high heat. When the olive oil is hot, add the garlic and tomatoes and sauté for 1 minute. Add the sherry, deglazing the pan. Add the wine, orange juice and orange zest. Continue to cook, stirring occasionally. When the liquid in the pan has reduced by half, stir in the butter and cook another 1-2 minutes. Just before serving, stir in the parsley and basil. Place each sole fillet on a plate. Spoon the sauce over the fillets, equally dividing it between the plates, and allowing it to spill down around the fish.