The £500,000 (US $779,300) Diamond Jubilee Stakes (G1) for older horses sprinting 6 furlongs, run as the Cork and Orrery Stakes from 1868 to 2001, was renamed in 2002 as the Golden Jubilee, and again in 2012 to celebrate Queen Elizabeth's Diamond Jubilee, and is the last Group stakes of the meeting. The eyes of the racing world were on Australian superstar Black Caviar
, sent off as the 1-6 favorite in the field of 14, looking to extend her unbeaten streak to 22 in her first start outside her home country. In to challenge her included 5-1 second choice Moonlight Cloud and 8-1 Society Rock. 33-1 Soul battled for the early lead with 66-1 Bogart while stalked by Black Caviar and Krypton Factor. At the 3/16 pole jockey Luke Nolen asked Black Caviar and she gained the lead. Moonlight Cloud and 40-1 Restiadargent rallied together on the outside, but despite Nolen misjudging the line and appearing to stop riding 20 yards from the line, Black Caviar managed to hold off Moonlight Cloud by a head in 1:14.10 over the good to soft course. It was another neck back to Restiadargent third.
Winning jockey Luke Nolen said, "I probably underestimated the testing track of Ascot. It is quite unfortunate because it is going to over-shadow what was a good win. I under estimated the straight six here. It was pilot error but I got away with it."