Heat a wok until smoking hot. Add the oil and swirl up the sides, then tip in the pork strips and stir-fry for 3-4 minutes until well sealed and lightly browned. Tip in the ginger with the peppers, scallions and chilli and stir-fry for another 30 seconds.
Mix the soy sauce, chilli oil (if using), honey and vinegar in a bowl and then pour into the wok and tip in the noodles. Toss together until well combined and cook for another 1-2 minutes until the noodles have all separated and are piping hot. Stir in the basil leaves, then divide among warmed bowls to serve.