Question: This film is an adaption of a Jacques Offenbach's opera that was written by a Hungarian British screenwriter?

Context:
Le château à Toto
Le château à Toto ("Toto’s castle") is an opéra bouffe in three acts of 1868 with music by Jacques Offenbach.
 The French libretto was by Henri Meilhac and Ludovic Halévy.
 It is situated in an important sequence of fifteen opera works and revivals by Offenbach between 1867 and 1869.
La Périchole
La Périchole (] ) is an opéra bouffe in three acts by Jacques Offenbach.
 Henri Meilhac and Ludovic Halévy wrote the French-language libretto based on the 1829 one act play "Le carrosse du Saint-Sacrement" by Prosper Mérimée, which was revived on 13 March 1850 at the Théâtre-Français.
 Offenbach was probably aware of this production, as he conducted the orchestra of the Comédie-Française from around this time.
 Another theatrical creation that pre-dates Offenbach's opéra bouffe and may have influenced the piece is a farce by Desforges and Théaulon given on 21 October 1835 at the Théâtre du Palais-Royal.
Whittington (opera)
Whittington is an opera (described in the premiere programme as 'A New Grand Opera Bouffe Feerie, in Four Acts and Nine Tableaux) with music by Jacques Offenbach, based on the legend of "Dick Whittington and His Cat".
 It was premiered in a spectacular production at the Alhambra Theatre, London, on 26 December 1874.
 "Whittington" is the only major work of Offenbach to have received its premiere in London, and came between the incidental music for "La Haine" and his third version of "Geneviève de Brabant".
Emeric Pressburger
Emeric Pressburger (5 December 19025 February 1988) was a Hungarian British screenwriter, film director, and producer.
 He is best known for his series of film collaborations with Michael Powell, in an award-winning collaboration partnership known as the Archers and produced a series of films, notably "49th Parallel" (1941), "The Life and Death of Colonel Blimp" (1943), "A Matter of Life and Death" (1946, also called "Stairway to Heaven"), "Black Narcissus" (1947), "The Red Shoes" (1948), and "The Tales of Hoffmann" (1951).
Fantasio (Offenbach)
Fantasio is an 1872 opéra comique in 3 acts, 4 tableaux with music by Jacques Offenbach.
 The French libretto by Paul de Musset was closely based on the 1834 play of the same name by his brother Alfred de Musset.
 The opera found little success in Offenbach's lifetime, was revived in the 1930s and performed in a critical edition in the 2000s.
The Tales of Hoffmann
The Tales of Hoffmann (French: Les contes d'Hoffmann ) is an "opéra fantastique " by Jacques Offenbach.
 The French libretto was written by Jules Barbier, based on three short stories by E. T. A. Hoffmann, who is the protagonist of the story.
 It was Offenbach's final work, as he died a year before the premiere.
List of compositions by Jacques Offenbach
This is a list of musical compositions by Jacques Offenbach (1819–1880).
 Offenbach is principally known for his operettas, of which he composed 98 between 1847 and 1880.
 He also wrote two opéras, "Die Rheinnixen" and his unfinished masterpiece "Les contes d'Hoffmann".
The Tales of Hoffmann (film)
The Tales of Hoffmann is a 1951 British Technicolor film adaptation of Jacques Offenbach's opera "The Tales of Hoffmann", written, produced and directed by the team of Michael Powell and Emeric Pressburger working under the umbrella of their production company, The Archers.
Mesdames de la Halle
Mesdames de la Halle is an opérette bouffe in one act by Jacques Offenbach, with a libretto by Armand Lapointe.
 It was first performed at the Théâtre des Bouffes Parisiens, Paris on 3 March 1858.
 and was the first work of Offenbach's at the Bouffes with a chorus and a large cast.
 Gänzl describes the piece as “a delicious piece of Parisian bouffonerie”
Le financier et le savetier
Le financier et le savetier (The financier and the cobbler) is a one-act opérette bouffe of 1856 with words by Hector Crémieux and Edmond About, and music by Jacques Offenbach, based on the poem by La Fontaine.
 In 1842 Offenbach had set "The Cobbler and the Financier" ("Le Savetier et le Financier") among a set of six fables of La Fontaine.

Answer: The Tales of Hoffmann