Whisk lemon zest and juice with oil and wine. Wash the herbs, dab dry and chop finely, stir into the marinade. Season with salt, pepper and sugar. Wash the lemons, cut 1 lemon into slices, cut the rest in half. Wash fish, dab dry, cut into 4 pieces. Put the fish on 1 piece of aluminium foil each.
Brush with marinade, place 1 slice of lemon on each and wrap in aluminium foil. Cook on the hot grill with the halved lemons for 10-12 minutes. Wash the salad, dab dry and pluck into bite-sized pieces. Wash and clean the tomatoes and cut them into pieces. Mix the lettuce and sprinkle with the vinaigrette. Serve fish with lemon and salad