Mick Herron's Jackson Lamb (Slough House) Novels in Chronological Order

Slow Horses (2010)

Dead Lions (2013)

The List (2015)

Real Tigers (2016)

Spook Street (2017)

London Rules (2018)

The Drop (2018)

Joe Country (2019)

The Catch (2020)

Slough House 2021

Bad Actors (2022)

The Secret Hours (2023) This isn't officially part of the Slough House series - but it's a very close relation.