Preheat the oven to 200C/400F/Gas 6.
Place the tomatoes onto a baking sheet, dust with the icing sugar and place into the oven to roast for ten minutes, until they start to collapse.
For the sole, heat the butter in a frying pan over a high heat. When foaming add the fish and fry until cooked through, about 2-3 minutes on each side. Lift the fish out and keep warm.
Add the chilli, capers and herbs to the pan and warm through.
To serve, place the fish onto a serving plate and drizzle the herbs over the fish and serve with the roasted tomatoes.