From the M5, take the A30 turn off to Okehampton / Bodmin staying on the A30 until directed on to the A386 to Holsworthy, followed by the A3079 still following signs to Holsworthy for approximately 13 miles then briefly turning right on to the A3072, after approx. 1/4 mile turn left at Brandis Corner and follow signs for Bradford/Thornbury (3 miles).
