The Masoretic Text was used as the basis for translations of the Old Testament in Protestant Bibles, such as the King James Version (KJV), and American Standard Version, and for some versions of Catholic Bibles (after 1943). However, the text is sometimes adjusted to conform to the Greek LXX in passages where clarification or Christological interpretation was felt necessary.
But is there any English translation, which only uses the Septuagint (LXX)?