Put the sliced potatoes in a pot, cover with water and bring them to the boil. Then turn them down and simmer for 10 minutes. Then drain them and put them in a large bowl.
Meanwhile, heat the oil in a large frying pan and added the chopped bacon.
Cook until it just starts to go crispy then add the spring onions and cook for about 3 minutes
Put the bacon and spring onions in the bowl with the potatoes.
Keep the pan on the heat and add a little more oil.
Beat the 8 eggs together with the mustard, half of the cheese and some pepper.
Add the egg mixture to the potatoes and bacon and mix well. Then pour everything into the pan over a medium heat and cook for 6-8 minutes without stirring.
When it looks like the egg has mostly set and there is a little liquid still on top, pop the pan under the grill to finish cooking.