Getting to Bovey Castle:

Take the M5 to Exeter and take junction 31 onto the A30 (sign-posted Okehampton).

Then take the first exit off the A30 onto the B3212 into Moretonhampsted (10 miles).
Go straight through Moretonhampsted, keeping the White Hart Inn on the left, towards Postbridge.

Bovey Castle is 2 miles from Moretonhampsted on the left, through large iron gates.