Method
Season the brill fillets well with salt and pepper. Heat the olive oil in a large non stick frying pan over a medium high heat. When the oil is hot, add the brill skin side down. Fry for 4 to 5 minutes, until the fish has cooked about three quarters of the way up the fillet.
Remove the pan from the heat and carefully lift the fish on to a plate.
Return the pan to the heat and add the anchovies, chilli, garlic, rosemary and thyme if using. Move everything around the pan with a spatula for 2 to 3 minutes until the anchovies begin to break down and the garlic and rosemary smell fragrant.
Return the brill to the pan, this time skin side up. Give the pan a gentle shake, then add the cream along with 2 tablespoons of water and bring the liquid to a gentle simmer.
Cook for 4 to 6 minutes until the sauce thickens and bubbles around the fish. Taste the sauce and adjust the seasoning if needed.
Remove from the heat. Place a piece of fish on each plate, spoon over the sauce and serve straight away.