14 March 1961
In 1935, Cambridge University Press and Oxford University Press who were the copyright holders of the English Revised Version Bible felt that a modern version of the bible was needed and investigations began. Proceedings to compile the Revised English Version only began in the 1940’s. A team of experts was organized and the process of revising the book was accomplished. The revised version was published as The New English Bible on 14 March 1961. The new English version was revised yet again in 1989 and was published as The Revised English Bible.
References

Bible-researcher Chapter 11The Last Thirty Yearsby F. F. BRUCE [online] Available at: https://www.bible-researcher.com [Accessed on 28 February 2013]|

Greatsite English Bible History [online] Available at: www.greatsite.com [Accessed on 28 February 2013]