Take the A20 into Kent until you reach the junction with the A227. Take the A227 towards Tonbridge. Stay on the A227 for approximately 7 miles and you should reach a roundabout. Darenth Avenue is the turning on the right.
Nearest station is Tonbridge (BR). Walk through the High Street, north up Shipbourne Road (A227) and turn left at the 2nd mini roundabout into Darenth Avenue.