You can use the Google route finder too:

Directions from Ower roundabout Romsey:

Take exit onto A3090 (signposted Romsey) - Travel for 0.52 miles
Turn left onto the A27 (signposted Salisbury) - Travel for 3.03 miles
Turn right onto Newtown road (signposted Newtown)
Continue a mile or so up road until telephone box on right.
Take track opposite telephone box and continue up bumpy track, road forks to left (bear left).
Continue up to top of track, gate signposted Woodpeckers B&B