which year did they make that transition?
2004
The Guardian
In 2004, "The Guardian" announced plans to change to a Berliner or "midi" format, similar to that used by "Die Tageszeitung" in Germany, "Le Monde" in France and many other European papers. 
what is uncle david? British black comedy film who is the main character in this film? Uncle David (David Hoyle) who played the character? David Hoyle when was this film released? 2010 was it reviewed by any critic or newspaper? Yes, Ben Walters has written his reviews in "The Guardian". what was his reaction? He said that Hoyle had chosen a controlled, beguiling style rather than the spark of his performance persona. when was the above-mentioned newspaper started? 1821 which was the earliest war they covered? American Civil War what is the publication called in the us? Guardian America were they accused of being prejudiced in the coverage of any middle-east news? Yes, accusation of biased criticism of Israeli government policy and of bias against the Palestinians. did they change their format in recent years? Yes, to a Berliner or "midi" format.
wiki:11202859
The Guardian [SEP] Moving to the Berliner paper format
"The Guardian" is printed in full colour, and was the first newspaper in the UK to use the Berliner format for its main section, while producing sections and supplements in a range of page sizes including tabloid, approximately A4, and pocket-size (approximately A5). In 2004, "The Guardian" announced plans to change to a Berliner or "midi" format, similar to that used by "Die Tageszeitung" in Germany, "Le Monde" in France and many other European papers. At 470×315 mm, this is slightly larger than a traditional tabloid. Planned for the autumn of 2005, this change followed moves by "The Independent" and "The Times" to start publishing in tabloid (or compact) format.