As a student at University of Edinburgh, Myles was active in Edinburgh University Film Society.[2] On September 4, 1967, Myles and her then boyfriend, David Will, wrote a letter to the editor of The Scotsman newspaper that was critical of the Edinburgh International Film Festival. The students were invited to work with festival director Murray Grigor, which they did, with great impact, as their focus was on auteurs like Samuel Fuller and other influential American New Wave filmmakers.[3]
From Spring 1968 onwards, Myles began working at Edinburgh International Film Festival, first in programming, and then as a deputy editor of the festival.[1] From 1973 to 1980, she was director of the festival.[2] She was the first woman director of a film festival.[4]
In 1979, together with Michael Pye, Lynda Myles coined the term 'the movie brats' which came to define a new generation of American film-makers, nurtured by watching and studying popular films themselves rather than by theatre or industry apprenticeship. It was this generation whose work Myles had championed in her role at the Edinburgh Film Festival. The term went into common usage, and was recently quoted by Steven Spielberg in several interviews regarding his work. The argument underlying the phrase was made in her and Pye's study of this generation.[5]
Myles was appointed Commissioning Editor for Drama at the BBC for two years.
From 1990 to 1994, Myles was co-executive director of the East-West Producers' Seminar, a training program for young producers in Eastern Europe.
In 1991, Myles co-produced the first of three films in Roddy Doyle's The Barrytown Trilogy, The Commitments. She continued to work as an independent producer, making the second and third films in The Barrytown Trilogy, The Snapper and The Van.
Oliver-Goodwin, Michael; Myles, Lynda (2012). "Part II: Vertigo's Wanderers: On Seeking the Cinematic Sacred. Chapter 5: Alfred Hitchcock's San Francisco: You Can Hang by Your Fingers with James Stewart, Dream in the Fog with Kim Novak, and Relive Their Terrifying Love Story on the Vertigo Tour". In Cunningham, Douglas A. (ed.). The San Francisco of Alfred Hitchcock's Vertigo: Place, Pilgrimage, and Commemoration. Lanham, MD: Scarecrow Press. pp. 81–96. ISBN978-0-810-88123-5. OCLC775873185. Re-publication of July 1982 San Francisco magazine article