B.F. Westcott worked on the committee of the Revised Version of the Bible. The Revised Version, was commissioned only to supposedly correct any errors in the King James Bible. The committee was ordered not to change manuscripts, or to use any manuscripts not used in the King James Bible, and also that any and all revisions made had to be incredibly limited.
This was the plan . . . though misguided by the thought that there were errors in the King James Bible, they were decent in wanting to keep to the manuscripts that had been proven to be true and reliable. However, Westcott, and Hort, did not have convictions that the Bible was the Word of God, and were deceived into believing and teaching that the manuscripts used to put together the King James Bible of 1611, should be discarded.
Because of this, Westcott (and Hort), subtly introduced other manuscripts and caused the committee to slowly completely depart from the Manuscripts they were told to strictly use.
They did so subltly because if it was realized what was being done, they would have most likely been kicked off the committee. Westcott succeeded in doing just what he wanted, and the end result was that when the Revised Bible was completed, it was no longer a 'more correct' King James Bible, but a completely different Bible, with Different manuscripts and corruptions galore. Researching, it becomes evident that these corruptions were in line with the unbiblical beliefs of Westcott (and Hort).