Cook the noodles according to pack instructions, drain and cool under cold running water.
Meanwhile, blanch the mangetout and broccoli in boiling water for 3-4 minutes. Drain and cool under cold running water.
Toss together the noodles, cooked vegetables, prawns, spring onions, mango and mint in a bowl.
Make a dressing by whisking together the sweet chilli sauce, soy sauce and lime juice - add the juice of half the lime to start, then taste and add more if needed for a tangy flavour.
Pour the dressing over the salad, toss to combine and serve immediately.
Cook's tip: If you would like to serve this as a hot dish, do not rinse the noodles or vegetables after cooking and leave warm. You could also easily multiply this dish to feed 2, or to keep for lunch the next day.