Bring a large saucepan of salted water to the boil and add the potatoes. Boil over a medium high heat with a lid on until the potatoes are fork tender, ensure not to overcook otherwise they'll fall apart too much.
Remove from the heat and drain off the water then allow to cool for a few minutes. Season well with salt and pepper. Add the mayo, avocado mayo, dill, chilli flakes and chopped spring onions and using a spoon gently fold through the potatoes to coat evenly. If needed add a little extra mayo, I usually judge this by eye if there's not quite enough to coat the potatoes.
Serve up and enjoy either while still warm or after being refrigerated cold. :)
