Anthony Horowitz said London was the perfect setting for this drama and wanted to make full use of it.
Filming at bedale road harold hill in sept 2015.
Filming in Canary Wharf on the 18th October.
Filming at The Olympic Park Velodrome on 20th September 2015
In season 1 episode 3, Case 1, Part 3 (2016), the food that Stefan (Mark Strepan) is eating for breakfast when Rash (Ben Tavassoli) asks "how can you eat that crap?" is blood sausage.