TV reporter Clive Gunnell presents this documentary about the Isle of Portland. Portland is known as the isle of slingers for using slingshot against its encroaching enemies. It is situated in the English Channel and joined by a shingle sandbar Chesil Beach to the mainland at Weymouth. Royal Naval Air Station Portland was opened in 1917 and from 1959 was also called HMS Osprey. The naval base closed in 1999. Thomas Hardy and Dr Marie Stopes had associations with the isle.