The veteran receiver boosted his TD count for the year to 6.
Travis Hunter recorded his maiden National Football League touchdown but it was just a solace as the Los Angeles Rams brushed off travel fatigue to secure a 35 to 7 victory over the Jacksonville at Wembley.
They did not touch down in the UK until the morning of Saturday - the prior day to the last fixture of this campaign's UK games, which was the 43rd regular regular-season matchup to be staged in the London.
This marked the latest any team has come for an league match in London, while the Jacksonville, who also approached the match with a winning standing, had been in London since Tuesday.
But the Los Angeles charged into a 21-0 first-half lead before easing through the second half, with seasoned pass-catcher Adams scoring a triple of TDs as the squad finished with five total overall.
Hunter made sure the Jaguars evaded a blanking with nine minutes remaining, helping to cut the score to 28 to 7, but it did not take the shine off an dominant win by the Rams, who have been projected to be in Super Bowl the mix again this year having last won the NFL's championship game in the 2022 season.
