First, fill a small saucepan with cold water and bring to the boil. Then add the egg noodles and simmer for 4 minutes until just underdone. Drain the noodles and stir in 1 tablespoon soy sauce and a drizzle of oil to stop them sticking together. Set aside for now.
Heat a wok or frying pan over a high heat and add the rest of the oil. Add all the vegetables except the spring onions. Cook for 5 minutes, stirring regularly until softened then set aside in a bowl.
Place the wok/frying pan back on the heat and add more oil if needed. Fry the chopped bacon until crispy.
Add the vegetables, spring onions, noodles and all the remaining ingredients and stir fry over a high heat until piping hot.
Turn down the heat slightly, make a space at the bottom of the pan and pour in the egg. Stir the egg in this space, cooking and scrambling it before mixing it into the noodles.