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The Best Seasons of Line of Duty
Every season of Line of Duty ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Line of Duty!

#1
Season 3
6 Episodes
First Aired: Mar 2016
8.7/ 10
Average Rating#2
Season 5
6 Episodes
First Aired: Mar 2019
8.5/ 10
Average Rating#3
Season 4
6 Episodes
First Aired: Mar 2017
8.5/ 10
Average Rating#4
Season 2
6 Episodes
First Aired: Feb 2014
8.4/ 10
Average Rating#5
Season 1
5 Episodes
First Aired: Jun 2012
8.0/ 10
Average Rating#6
Season 6
7 Episodes
First Aired: Mar 2021
8.0/ 10
Average Rating