John Dickson Carr
John Dickson Carr was a very highly regarded American mystery writer, though he lived for most of the '30s and '40s in England, married there and set many of his books there (<a href=https://en.wikipedia.org/wiki/John_Dickson_Carr>Wikipedia</a>). His two main detectives, Dr. Fell and Sir Henry Merrivale, were very English (<a href=https://en.wikipedia.org/wiki/John_Dickson_Carr#Dr._Fell_and_Sir_Henry_Merrivale>Wikipedia</a>).
Works (50)

The hollow man
1951

The Exploits of Sherlock Holmes
1954

Country House Murders

Hag's Nook
1933

The Case of the Constant Suicides
July 2002

Death-Watch (A Dr. Gideon Fell Mystery)
May 1990

The Crooked Hinge
1955

The sleeping sphinx
1947

The Twelve Crimes of Christmas

Senior Sleuths

The Emperor's Snuff-Box
June 22, 1995

The murder of Sir Edmund Godfrey
1936

He who whispers
1946

The Curse of the Bronze Lamp
April 1997

The Black Spectacles
1969

It Walks by Night
January 1997

The 9 wrong answers
1952

The men who explained miracles
1963

The third bullet
1954

The door to doom, and other detections
1980

The Burning Court
1937

The John Dickson Carr treasury

The life of Sir Arthur Conan Doyle
1949

Three detective novels
1959

The department of queer complaints

Twelve American Crime Stories

Scandal at High Chimneys
1959

Below Suspicion (Gideon Fell Mystery Series)
December 1986

Corpse in the Waxworks (A Monsieur Bencolin Mystery)
July 1990

In spite of thunder
1960

Gilded Man
September 2007

The Blind Barber (Dr. Gideon Fell Mystery)
June 1990

The Bride of Newgate
December 1991

Death in five boxes

Crime On The Coast
November 1, 1987

Dead man's knock
1958

The red widow murders
1935

Dark of the Moon
September 2001

The peacock feather murders

And so to murder
1940

Assassinio nell'abbazia

The Mad Hatter Mystery (Dr. Gideon Fell Mystery)
August 1989

The lost gallows
1931

The witch of low tide
1961

Papa La-Bas
May 1989

The demoniacs
1962

Panic in box C
1966

The man who could not shudder
1940

A graveyard to let
1949

The Judas window