Cantankerous and dishevelled, Chief Inspector Dover is no one's idea of a model detective - but he does have an uncanny knack for solving crimes. In these radio dramas, set in the 1960s and '70s, he and his long-suffering sergeant, Charlie McGregor, investigate sinister cases of kidnap and murder. The first four are adapted from Joyce Porter's novels, while the latter two are original stories based on her characters.

Inspector Purbright is a thoroughly English policeman: affable, polite, dogged and decent. Created by award-winning crime writer Colin Watson, he appeared in 12 Flaxborough mysteries, four of which were adapted for BBC TV under the title Murder Most English. These five radio dramatisations star Peter Jeffrey, John Pullen and John Rowe as Purbright.

DI Trueman and DS Riley are reluctant partners in crime-fighting, paired up after high-flyer Trueman suffered a nervous breakdown that left him struggling to get back on his feet. Working with Riley isn’t exactly what the doctor ordered - but the Sergeant turns out to be much more of a help than a hindrance when it comes to cracking cases.

A BBC Radio 4 crime drama about a Merseyside mum-turned-private eye. Single mum Rosie Monaghan is 39 and redundant. Wondering what to do with the rest of her life – and with two kids to support – she decides to start a new career as a private detective. In series 1 she begins her first investigation, involving a mystery client and a seemingly innocent death that no one else thinks is murder. But being a private eye proves trickier than she thought.

In these two compelling murder mysteries, MI6 officers Henry Colvil and Alex Soames become involved in a pair of complex cases which take them to the very top of the political and religious spheres. Written by acclaimed historian, broadcaster and author Christopher Lee, these gripping spy thrillers star Christopher Benjamin (Pride and Prejudice, Doctor Who) as Henry Colvil and Amanda Redman (The Good Karma Hospital, New Tricks) as Alex Soames. 

London,1953. Josephine Daunt and Susan Dervish both worked for the Ministry of Defence during the Second World War, doing top-secret, highly dangerous espionage work. But in peacetime, they find themselves without a job and feeling useless. Determined to put their talents to good use, they decide to set up a detective agency, with the help of former private eye Bill Mackie. From their Covent Garden office, they handle a steady flow of business.

The first six series of the popular radio drama set in a Manchester legal practice, starring David Schofield. Frank Twist and Sarah Gold lead a maverick team of freelance paralegals operating in the mean(ish) streets of Manchester. Their agency operates 24 hours a day, seven days a week, dispatching legal representatives to set free burglars, muggers and even some innocent people who find themselves on the wrong side of a cell door.

Glasgow’s finest are on the case in these thrilling radio adaptations, based on the books by Peter Turnbull. In the four-part serial Condition Purple, a murdered prostitute is found in the heart of Glasgow's prosperous business quarter. Could a tattoo on her body hold the key to finding her killer? In Two Way Cut, another four-parter, a headless body without a speck of blood on it has the cops puzzled - and who was the strange figure that PC Hamilton saw running along by the canal?

DS Dave Brook is a long-serving, ducking-and-diving police officer who takes armed robberies and violent crime in his stride. But then he is teamed up with young 'grammar school boy' DC Blair Maxton from sleepy Epsom. How will Max cope with the mean streets of his new patch? Among the thrilling cases in these four series, the detectives tackle an armed gang, confront a notorious crime family, search for a missing wife, investigate a gruesome ax murder and the death of a reclusive young woman, and assist ‘The Sweeney’ flying squad.

Jazz-loving Policeman Charlie Resnick is one of the most popular characters in contemporary crime fiction. This thrilling collection brings together three dramatisations and two original radio stories starring the Nottingham-based detective, all scripted by his creator, award-winning author John Harvey.

Ready with his black bag, Dr Finlay sets out to remedy all manner of ailments suffered by his patients in the Scottish Highland town of Levenford. In this complete BBC Radio collection, we meet the surprising Dr Finlay as he is welcomed to the practise with a black eye. Over the course of these series the early years of Dr Finlay are explored, as he gets to grips with the locals in the Scottish Highland town of Levenford.

Frank Twist and Sarah Gold run The Agency, a paralegal firm based in sunny Manchester. With the help of their team of freelancers, they operate a round-the-clock advice service, going into police stations across the North West to offer help and support to those in custody. In these 26 episodes, their clients include the good, the bad and the ugly: from a teenager pulled in for texting an indecent photo of his girlfriend, to a man detained for suspected arson at a primary school. 

Two BBC Radio 4 adaptations of Victor Canning’s comic novels about the exploits of a shy Solicitor’s Clerk, starring Richard Griffiths. Edgar Finchley is middle-aged, unassuming and not in the habit of taking holidays - but in these two delightful dramatisations, he unexpectedly discovers the delights of travel as he crosses the Channel to the Continent and explores the English countryside.

Seventeen stories from the gritty crime series created by Danny Brocklehurst, starring Hugo Speer as Manchester detective John Stone. This collection brings together Series 1 to 4 of this intelligent detective drama, tackling morally ambiguous, complex and challenging subjects. DCI Stone and his team investigate a series of brutal murders and missing person cases, among other grisly crimes. Starring Hugo Speer as DCI John Stone, Craig Cheetham as DI Mike Tanner and Deborah McAndrew as DS Sue Kelly.

With his black hat, huge umbrella, unworldly simplicity and 'beaming but breathless geniality', Father Brown is one of fiction's best-loved amateur detectives. Short and tatty, but with the wisdom and insight to unravel the most wayward of criminal minds, he has entertained generations. In this collection of 13 full-cast dramatisations, the high priest of detection becomes involved in seven intriguing cases that will tax even his mental powers to the limit.