London Films Productions is a British film and television production company founded in 1932 by Alexander Korda and from 1936 based at Denham Film Studios in Buckinghamshire, near London. The company's productions included The Private Life of Henry VIII (1933), Things to Come (1936), Rembrandt (1936), and The Four Feathers (1939). The facility at Denham was taken over in 1939 by Rank and merged with Pinewood to form D & P Studios. The outbreak of war necessitated that The Thief of Bagdad (1940) be completed in California, although Korda's handful of American-made films still displayed Big Ben as their opening corporate logo.

The Sound Barrier is a 1952 British aviation drama film directed by David Lean. It is a fictional story about attempts by aircraft designers and test pilots to break the sound barrier. It was David Lean's third and final film with his wife Ann Todd, but it was his first for Alexander Korda's London Films, following the break-up of Cineguild. The Sound Barrier stars Ralph Richardson, Ann Todd, John Justin and Nigel Patrick. It was known in the United States as Breaking Through the Sound Barrier and Breaking the Sound Barrier.