Take the M5 to Exeter, then onto the A30 until just after Bodmin.At the big roundabout turn left onto the A391, which heads South and is signposted St. Austell. Continue on this road until you reach a roundabout in Stenalees turn LEFT. At the next mini roundabout turn RIGHT and then STRAIGHT over the next mini roundabout immediately after (do NOT turn left towards the Eden Project). In simple terms ALWAYS follow the St. Austell/A391 signs.You will now be presented with a magnificent view of the sea as you come down into St. Austell Bay as well as 4 roundabouts each about half a mile apart. Go STRAIGHT at ALL the roundabouts and you will then come to a major "T" junction with traffic lights and this is the A390.Turn left (away from St. Austell) onto the A390 and after 300 metres turn left towards Tregrehan. Look out for the Brown "Boscundle Manor" tourist signs and follow them in.