My gold standard for detective series is the Wimsey novels too, but of more modern ones I’ve read my way through the Ruth Galloway novels of Elly Griffiths and occasionally drop in on Donna Leon’s Brunetti as he eats his way round Venice.

We enjoyed The Tunnel too but the last series (3) might be best avoided. I don’t know if you’ve watched Foyle’s War. No romance but a really interesting look at World War II from the viewpoint of a detective and his young female driver.