If coming from England, please note that there are major roadworks on the A30.
So the usual right turn signposted Blisland may or may not available
Fallback is to continue on about 2 miles and take the Bodmin exit. At the end of the slip road do a U-turn to get back onto the A30 Eastbound. Alternativley go straight across and then turn right signpost Helland
Then follow the directions for A30 Eastbound
If the traffic is heavy, then there can be tailbacks for several miles east of Bodmin and another option is to take the A395, soon after Laucestion, to Camelford. Then follow the directions for the Camelford route