From the A303 turn
south by the Willoughby Hedge Service Station, and take the country
lane sign-posted West Knoyle and Bison Centre, proceed for 1 mile through
the village of West Knoyle and continue straight on. At the sharp left-hand
bend you will find straight ahead the avenue to Bush Farm and the Bison
Centre. From the A350 turn west onto the B 3089, proceed to the service
station and continue as above.