大だいブリテン

• グレートブリテン

  Synonymous; グレートブリテン is a direct katakana transcription of 'Great Britain', while 大ブリテン uses the kanji 大 (great) and is less common.

• イギリス

  Commonly used to refer to the United Kingdom as a whole, not just the island of Great Britain.

• 大だいブリテン

  Standard modern spelling for Great Britain.

• 大不列顛だいぶりてん
  ateji (phonetic kanji usage)rarely-used kanji form

  Ateji spelling; rarely used.

• 大不列顚だいぶりてん
  ateji (phonetic kanji usage)rarely-used kanji form

  Ateji spelling; rarely used.

From English 'Great Britain'. The kanji 大 (great) is prefixed to the katakana ブリテン (Britain). Ateji forms 大不列顛 and 大不列顚 are historical phonetic spellings.