BUT I believe the Guardian was notable for being one of the VERY few newspapers to consistantly expose, and in some depth, what was happening in Germany at that time.
I've found that there were hundreds of articles in dozens of British newspapers that give details about the concentration camps in the 1930s. The camps that the Awake! claimed were "unknown" before 1945.
A few examples from a very, very, long list:
"Prisoners in the Sachsenhausen concentration camp", Liverpool Daily Post, 7th January 1939.
"Jews Beaten to Death" (at Sachsenhausen), Cornishman, 15th December 1938.
"Germany's Political Prisoners" (at Sachsenhasuen), Daily Record, 7th January 1939.
"Pastor Dies at Nazi Camp" (Niemoeller at Sachsenhasuen), Scotsman, 24th July 1939.
"Inside a German Prison Camp" (Sachsenhausen), Nottingham Evening Post, 22nd of July 1937.
"The Toll of Dachau", Yorkshire Post and Leeds Intelligencer, 23rd June 1938.
"The Twelve Months of Dachau Horror", Birmingham Daily Gazzette, 28th November 1938.
"Brutality at Dachau", Yorkshire Evening Post, 31st October 1939.
"Camps for political prisoners under the Nazi regime" (Dachau), Illustrated London News, 10th February 1934.
"2000 Massacred in Reich Camps" (Dachau), Aberdeen Press and Journal, 20th July 1934.
"The Situation in Germany" (Dachau), Belfast Newsletter, 20th July 1934.
"Story of Massacre" (at Dachau), Western Morning News, 29th July 1934.
"The German Upheaval" (at Dachau), Taunton Courier, 25th July 1934.
"German Concentration Camps" (Dachau), The Scotsman, 24th October 1934.
"Nazi Concentration Camps not Improved" (Dachau), Derry Journal, 27th September 1935.
"Misled Germans - Life in the Concentration Camps - Electrified Wire", The Scotsman, 7th December 1936.
"The Toll of Dachau", Yorkshire Post, 23rd June 1938.
As I say, this is a very tiny sample from hundreds of articles published in dozens of newspapers exposing Nazi concentration camps by name in the British press in the 1930s. Examples from the Manchester Guardian not even included. And let alone newspapers in other countries.
And what is striking about the way these stories refer to Dachau is that knowledge of the camp was simply taken for granted. It was common knowledge. When it is characterised in the text, it is described in terms such as "infamous", "most famous" and "the notorious" concentration camp.
Yet the Awake! in 1995 claimed Dachau, Sachsenhasuen and other concentration camps were "unknown" to most, except readers of The Golden Age and Consolation magazines, before 1945.