Possible Clues:

• Island where British-style pillar and telephone boxes are painted blue
• Brown-and-white cow
• Lower variety of alternative energy use curtailed
• Chap catching 21s with twisted tail in island
• Island that could give us energy supply
• Fellow protecting bird of prey circling small island
• Source of milk that may provide us with energy
• Breed of dairy cattle
• Birds only slightly unsettled during stay in island
• After knitting use new grey jumper