Big +1 to Rivers of London. Great storyline across 10+ books, well written fun characters, and if you like listening to your books, a really well done audio book series read by Kobna Holbrook-Smith

Check out the Aubrey Maturin series by Patrick O’Brian, starting with Master and Commander. It’s set in the early 1800s, focusing on the Napoleonic War from the British perspective and all the battles are historically accurate while the author provides a wealth of detail on the technical aspects of the Age of Sail. And the language is simply gorgeous