Two to three hours from London (Heathrow). Take M3-M27 (West) - A31-A338 route (Bournemouth). Follow signs to Canford Cliffs then Sandbanks, to the chain ferry across Poole Harbour.
The Sandbanks Ferry
The ferry operates daily from 7am-11pm every 20 minutes, weather permitting (excluding Christmas Day). Departing Sandbanks at 7am, then 20 and 40 minutes past each hour, and on the hour. Departing Shell Bay at 7.10am, then 30 and 50 and 10 minutes past each hour.
From Exeter and the South West
Follow M5, A30 (Honiton), and merge onto A35. Continue on A35 to Bere Regis. Follow Sugar Hill and A351 to B351 and Studland.
Poole/Bournemouth (via ferry) use BH19 3AH.
Waterloo to Wareham (two hours). By taxi to Knoll House (ten miles).