Ka'imi Fairbairn's walk-off field goal capped Houston's 34-31 Week 6 win in London after C.J. Stroud led the tying and go-ahead drives.
Stroud finished 24-of-34 for 312 yards and three touchdowns, while Houston added 114 rushing yards and became the first team this season to score more than 20 points on Jacksonville.
Jaylin Noel broke out with four catches for 107 yards and a touchdown, and newly acquired Marvin Harrison Jr. contributed three first-down catches in his Texans debut.
Travis Hunter kept Jacksonville alive with a receiving touchdown and an end-zone interception—becoming the third player in 40 years with both in one game—but key Jaguars mistakes swung the AFC South race back toward Houston.