Upvote:5
Here is what Rudolf Höss had to say about this in his Death Dealer: The memoirs of the SS Kommandant at Auschwitz (Da Capo Press, 1996):
Compared to where I had been before, imprisonment with the IMT [International Military Tribunal] was like staying in a health spa. […] Even though the prison conditions were good in every aspect and I now had time to read from an extensive library made available to us, the interrogators were really not pleasant. Physically there was no problem, but more so were the mental and emotional effects. I cannot really blame the interrogators — they were all Jews. I was for all intents and purposes psychologically dissected. That's how accurately they wanted to know everything — this was also done by Jews.
So, it is clear that he was not physically abused at Nuremberg. He does not mention Bernard Clarke. If you want it, I can add to my answer what Höss had to say about how he was treated by the British Field Security Police.