5 largest 1st innings leads after which follow-on was not enforced

#3 399: Australia vs England, Brisbane 1928

England

were

ahead by 399 in the Ashes Test at Brisbane in 1928 and beat Australia by 675 runs in the match

In a rare occurrence, England dominated Australia in their own backyard when the first Ashes Test of the 1928-29 series went their way by a record figure. On Don Bradman's Test debut, England posted 521 at Brisbane with Patsy Hendren hitting 169 and two lower-order half-centuries pushing them to that score. The visiting bowlers then made merry against the Australian batting, bowling them out for 122 with six wickets to Harold Larwood.

England were 399 ahead but batted again to get 342/8, declaring the innings following 73 from Phil Mead and 65 from Douglas Jardine. Six wickets from Clarrie Grimmett seemed like an effort gone down the drain when Australia were set 742 to win. In an astonishing display with the ball, England romped home with a 675-run win by skittling Australia out for 66, with Jack White bagging 4/7, till date the hosts' biggest Test defeat in terms of runs.

Brief Scores: England 521 (Hendren 169, Larwood 70; Gregory 3/142) and 342/8 dec (Mead 73, Jardine 65*; Grimmett 6/131) beat Australia 122 (Ryder 33; Larwood 6/32, Tate 3/50) and 66 (Woodfull 30*; White 4/7, Tate 2/26) by 675 runs