Pan-Fried Smoked Salmon with Green Beans & Chives

350g new potatoes , halved 200g fine green beans , topped and tailed dash of olive oil 150g pack wild smoked salmon FOR THE DRESSING 1 tsp Dijon mustard 1 tsp golden caster sugar 2 tbsp white wine vinegar   2 tbsp vegetable oil 2 tbsp olive oil handful snipped chives...