SEA BASS WITH FIVE SPICE AND TANGY TOMATO SAUCE

1 small red onion, finely chopped • 1 tbsp sundried tomato paste • ¼ tsp Chinese five spice • 2 tbsp Chinese rice vinegar • 4 tsp clear honey • 180g pack 2 boneless sea bass fillets • 1 tsp olive oil • 275g pack fresh rice noodles • 150g Waitrose & Partners Pome Dei Moro Tomatoes