Wikipedia, which knows everything and is never ever wrong, says the following of the matter, which seems to differ:
"Writing in the spring of 1945 a long essay titled "Antisemitism in Britain", for the Contemporary Jewish Record, Orwell stated that anti-Semitism was on the increase in Britain, and that it was "irrational and will not yield to arguments". He argued that it would be useful to discover why anti-Semites could "swallow such absurdities on one particular subject while remaining sane on others". He wrote: "For quite six years the English admirers of Hitler contrived not to learn of the existence of Dachau and Buchenwald. ... Many English people have heard almost nothing about the extermination of German and Polish Jews during the present war. Their own anti-Semitism has caused this vast crime to bounce off their consciousness." In Nineteen Eighty-Four, written shortly after the war, Orwell portrayed the Party as enlisting anti-Semitic passions against their enemy, Goldstein."
"Writing in the spring of 1945 a long essay titled "Antisemitism in Britain", for the Contemporary Jewish Record, Orwell stated that anti-Semitism was on the increase in Britain, and that it was "irrational and will not yield to arguments". He argued that it would be useful to discover why anti-Semites could "swallow such absurdities on one particular subject while remaining sane on others". He wrote: "For quite six years the English admirers of Hitler contrived not to learn of the existence of Dachau and Buchenwald. ... Many English people have heard almost nothing about the extermination of German and Polish Jews during the present war. Their own anti-Semitism has caused this vast crime to bounce off their consciousness." In Nineteen Eighty-Four, written shortly after the war, Orwell portrayed the Party as enlisting anti-Semitic passions against their enemy, Goldstein."
-- http://en.wikipedia.org/wiki/George_Orwell