Question: Roger Avary and Basil Dearden both shared what role in the film industry?

Context articles: My Learned Friend
The Black Sheep of Whitehall
Basil Dearden
Glitterati (film)
Roger Avary
I Believe in You (film)
The League of Gentlemen (film)
James Dearden
The Goose Steps Out
The Man Who Haunted Himself

My Learned Friend is a 1943 British, black-and-white, comedy, farce, directed by Basil Dearden with his regular collaborator, Will Hay, as the film's star in the role of William Fitch.
 The principal supporting roles were taken by Claude Hulbert and Mervyn Johns .
 Character roles went to Laurence Hanray as Sir Norman, Charles Victor as "Safety" Wilson, Ernest Thesiger as Ferris and Ronald Shiner as the Man in Wilson's café.
 It was produced by Michael Balcon, Robert Hamer and Ealing Studios.
 The film's title refers to a tradition in British law: when addressing either the court or the judge, a barrister refers to the opposing counsel using the respectful term, "my learned friend".
 It was the last film featuring Will Hay as he had an operation, however, it wasn't the last role in his career as he would star as "Doctor Muffin" in The Will Hay Programme that aired on the radio, the radio show began in 1944.
 The humour of the film was different from the humour of Hay's films he previously made with Moore Marriott and Graham Moffatt and the film had more of a dark humour than any of Hay's other films.
 Hay had planned to make more films with Claude Hulbert that had a dark humour, but it was Hay's last film due to illness.
The Black Sheep of Whitehall is a 1942 British black-and-white comedy war film, directed by Will Hay and Basil Dearden, and starring Will Hay, John Mills and Basil Sydney.
 It was produced by Michael Balcon and Ealing Studios.
Basil Dearden (born Basil Clive Dear; 1 January 1911 – 23 March 1971) was an English film director.
Glitterati is a 2004 film directed by Roger Avary assembled from the 70 hours of video footage shot for the European sequence of "The Rules of Attraction" in October 2001.
 It serves to expand upon the very minimally detailed and rapidly recapped story told by the character of Victor Ward (portrayed by Kip Pardue, featured in Avary's other film "The Rules of Attraction") upon his return to the United States after having traveled extensively around Europe.
 Expanding upon those events, the film was intended as a connecting bridge between "The Rules of Attraction" and a planned film adaptation of Bret Easton Ellis' 1998 novel "Glamorama", which was to be directed by Avary and star Pardue.
 Avary has called the film a "pencil sketch of what will ultimately be the oil painting of "Glamorama"."
Roger Avary (born August 23, 1965) is a Canadian film and television producer, screenwriter and director in the American mass media industry.
 He worked on "Reservoir Dogs" and "Pulp Fiction", for which he and Quentin Tarantino were awarded the Oscar for Best Original Screenplay at the 67th Academy Awards.
 He wrote the screenplays for "Silent Hill" and "Beowulf".
 He also directed "Killing Zoe" and "The Rules of Attraction".
I Believe in You is a 1952 film directed by Michael Relph and Basil Dearden.
 It stars Celia Johnson and Cecil Parker and is based on the book "Court Circular" by Sewell Stokes.
 Inspired by the recently successful "The Blue Lamp", Relph and Dearden used a semi-documentary approach in telling the story of the lives of parole officers and their charges.
The League of Gentlemen is a 1960 British crime drama directed by Basil Dearden and starring Jack Hawkins, Nigel Patrick, Roger Livesey, and Richard Attenborough.
 It is based on the 1958 novel "The League of Gentlemen" by John Boland and adapted by Bryan Forbes, who also starred in the film.
James Dearden (born 14 September 1949) is an English film director and screenwriter, the son of Scottish actress Melissa Stribling and acclaimed English film maker Basil Dearden.
 He directed seven films between 1977 and 1999.
 His film "Pascali's Island" was entered into the 1988 Cannes Film Festival.
The Goose Steps Out is a British comedy film released in 1942.
 This film starred, and was co-directed by, the British comedian Will Hay.
 He shared directorial credit with Basil Dearden whose first film as a director this was.
 The film was a big box office hit in Britain, but not in the U.S., where audiences failed to respond to the humour of Hay's pathetic, bumbling persona.
 "The Goose Steps Out" is also noted as the film debut of a young Peter Ustinov.
The Man Who Haunted Himself is a 1970 British psychological thriller film written and directed by Basil Dearden (his final film) and starring Roger Moore.
 It was based on the novel "The Strange Case of Mr Pelham" by Anthony Armstrong.