Scrub the potatoes to remove dirt and soil. Cut them into bite-sized pieces.
Put these in a pan of cold water, bring to the boil and cook for approx.. 12-15 minutes until the potatoes are tender.
Meanwhile cut the sugar snap peas into thin slices.
Add the beans to potatoes for the last 5 minutes of the cooking, then add the sugar snap peas and spinach for the last minutes.
Drain the potatoes and vegetables and put them in a serving bowl.
Mix the dressing and pour over the salad.
Add the pumpkin and sunflower seeds, then toss gently and taste. Adjust the seasoning, if needed.
Serve warm or cold.