Sticky Sausage Tray Bake

Name: Sticky Sausage Tray Bake
Cuisine: American
Ingredients: 500g new potatoes, unpeeled and cut into chunks (a generous pound); 2 large leeks, trimmed and cut into 1 inch chunks; 2 red onions, peeled and cut into wedges; 4 carrots, peeled and cut into 1 inch chunks; 2 parsnips, peeled and cut into 1 inch chunks; 1/2 small swede (rutabaga) peeled and cut into 1/2 inch chunks; 2 TBS olive oil; salt, pepper and garlic granules to taste; 12 pork chipolata sausages (thinner sausages, use a meaty one with a nice flavour); a few sprigs of fresh thyme; 2 dessertspoons of marmalade; 1 TBS soy sauce; 2 tsp grainy mustard; 2 tsp cider vinegar