Possible Clues:

• Island of international importance
• Where couples from Frinton-on-Sea regularly go?
• Island going back and forth in paranoia, irrationally
• Sounds as if an island is mine
• Scottish island, site of St. Columba�s monastery
• A number one retirement island
• In a balloon going inside the island
• It's said I possess a place of spiritual retreat
• 'Hebridean island, early centre of Celtic Christianity (4)'
• Island on edge of Atlantic