Preheat the grill to medium.
Heat the oil in an ovenproof frying pan, add the smoked salmon, spring onions and potatoes and fry over a medium heat, stirring frequently, for 2-3 minutes.
Pour over the beaten eggs, season well with salt and freshly ground black pepper and cook gently for 3-4 minutes, or until the egg is beginning to set.
Place under the grill and cook for 3-4 minutes, or until the egg has set and the top is golden-brown. Remove from the pan, cut into wedges and place onto serving plates.
Place the cream cheese and herbs into a bowl and mix well.
To serve, top the tortilla wedges with the cream cheese mixture.