After the war he began a fruitful association with the film-making partnership called "
The Archers", which was led by
Michael Powell and
Emeric Pressburger. His first credit was for
A Matter of Life and Death (1946), followed by
Black Narcissus (1947). Mills received an
Academy Award nomination for his work on the Archers' ballet film,
The Red Shoes (1948). A 2010 appreciation of the film by
Peter Canavese notes Mills' contributions, "The still astonishing expressionistic dance sequence that stands as a performance of the Ballet Lermontov's
The Red Shoes ... is rapturous, as a feast of theatrical lighting and Technicolor photography (shot by the brilliant cinematographer Jack Cardiff), the choreography of Robert Helpmann, the music of Brian Easdale and the montage of editor Reginald Mills." Implicitly acknowledging its editing,
Michael Sragow wrote in 2011, "Yes,
The Red Shoes is ecstatic entertainment. ... But is it realistic? Only in the manner of an Expressionist painting. Powell and Pressburger create a stylized, intoxicating environment that fuses art and life and dance and cinema."
The Tales of Hoffmann (1951) also incorporated ballet in its adaptation of the original
Offenbach opera, and
André Bazin wrote at the time, "The cinema thus creates here a new artistic monster: the best legs adorned by the best voice. Not only is opera liberated from its material constraints but also from its human limitations. Lastly, dance itself is renewed by the photography and the editing, which allows a kind of choreography of the second degree where the rhythm of the dance is served by that of the cinema."
The Battle of the River Plate (1956) was Mills' last film with Powell and Pressburger, whose partnership broke up shortly thereafter. Mills had edited twelve films for The Archers. ==Later career==