Alison's trip around some of the many smaller islands that surround mainland Britain concludes with a visit to the Isles of Scilly. Her attention falls on Tresco, Bryher, St Martins and St Agnes, collectively known as the Off Islands, where she discovers a Robinson Crusoe-style desert island, and one of the finest examples of a sub-tropical garden in the northern hemisphere. She also gets some hands-on experience at one of the world's smallest working dairy farms, and reveals how the tourist-friendly locals have found inventive ways to maintain their slice of island life.
