Contrary to popular belief, Broadchurch is not based on or a remake of Danish show The Killing (2007), and the script for Broadchurch actually predates The Killing by at least five years. Chris Chibnall originally had the idea for Broadchurch and started working on the script in 2002, however, it took him ten years to get the show on air.
Series 3 received nearly 11 million views, making it ITV's most watched crime drama.
Throughout the series, all the mobile phones used by Alec Hardy are all David Tennant's real life mobile phones.
By the end of its first series, it had built an audience to 8.7 million.
The chocolate lab who accompanies Susan Wright belongs to Pauline Quirke, the actress who plays Wright. The dog's real name is Bailey.