Preheat a grill on a high heat.
Line a grill tray with kitchen foil and place the sausages on the lined tray. Place the sausages under the grill for 15 minutes, turning repeatedly to ensure even colouring.
In a bowl, combine the mustard, honey, and thyme.
Once the sausages have been browned, remove them from beneath the grill, brush them with the honey and mustard mix, and place them under the grill for 1 minute.
Remove the sausages again and turn them, brush the sausages and grill again. Repeat until the mixture has been used and the links are evenly coated.
Leave to cool for a minute as the honey becomes extremely hot.