Smoked Salmon Potato Salad without herbs

1 lb potato , peeled 300 g smoked salmon , finely chopped 1 tablespoon parsley , finely chopped 4 green onions , finely chopped 1 large egg , lightly beaten[...]

700 g large jersey royal potatoes or 700 g other new potatoes 1 bunch spring onion , trimmed and sliced 300 g full-fat creme fraiche or 300 g heavy cream salt[...]