Expolink are very easy to find with parking on site. Leave the M4 at junction 17 and take the A350 towards Chippenham. Follow this road for about three miles until you reach a roundabout. You'll pass Chippenham Golf Course on your right. At the roundabout, take the first left and follow the road for about 300 yards to some traffic lights with a right turning. Immediately after the lights on your left there is an ambulance station, and Greenways Business Park is the next left. Expolink is the first building on the left.