Hutton walked out on the morning of 20 August with the series tied 1-1 and the Ashes (still held by Australia from 1936-37) impossible for England to win in the conventional sense; only an outright Oval victory in this timeless Test would draw the series. He stayed at the crease across parts of three days. England added 411 for the second wicket with Maurice Leyland (187), then 215 for the sixth wicket with Joe Hardstaff Jr (169 not out).
The innings was an exercise in concentration rather than dazzle. Hutton hit 35 fours and no sixes; he gave essentially no chances. He passed Bradman's 334 to a roar from a packed Oval. Bradman, fielding at the time, walked over to shake his hand — a gesture caught on newsreel and remembered as a model of grace in defeat. Soon afterwards Bradman, bowling himself out of necessity, sprained his ankle in a foothold and was carried off; he could not bat in either innings.
England declared at 903 for 7. Australia, with neither Bradman nor Jack Fingleton (also injured) available to bat, were dismissed for 201 and 123. The margin — innings and 579 — remains the largest in Test history. Hutton's 364 took 847 balls; the strike rate of 43 looks slow now but was steady accumulation in the timeless-Test context, where finishing the innings mattered more than scoring quickly.
The record stood until Garry Sobers's 365 not out against Pakistan at Sabina Park in 1958. The England record still stands. Bradman, asked years later about the moment Hutton passed him, said: 'I was glad to be the first to congratulate him.'