The 19-year-old, who had his right leg amputated below the knee after suffering meningitis when he was a child, strode to a gold medal in the men's T44 100m final last night.
"I felt so prepared for these games that for the first time I wasn't nervous," Peacock told Channel 4. "The crowd has made these 2012 Games.
"I was thinking it was a bit loud and I asked them to quieten down as it wasn't fair on the other guys, I didn't want to put anyone off or have any excuses."
Peacock's rival Oscar Pistorius, who was one of the first to congratulate the Brit, failed to medal in the final.