Rinse and scrub the potatoes (if needed) and put them in a pan of cold water. Bring to the boil and simmer for about 10-15 minutes until tender. Drain and let them cool in a colander.
Meanwhile, chop the beetroots and spring onions into small pieces.
Mix the dressing ingredients.
When the potatoes are cooled, cut them into bite sized pieces.
Toss the potatoes, beetroot, spring onion and parsley together. Pour over the dressing, season with salt & pepper. Combine well and let it rest for a few minutes before serving.