Question: The Chamber of Horrors is a 1929 British silent horror film based from one of the attractions in London owned by whom?

Context paragraphs:
Chamber of Horrors (1929 film): Chamber of Horrors is a 1929 British silent horror film directed by Walter Summers and starring Frank Stanmore.  It was made at Welwyn Studios.  A man spends the night in the Chamber of Horrors of Madame Tussauds.

A Cottage on Dartmoor: A Cottage on Dartmoor (a.k.a. Escape from Dartmoor) is a 1929 British silent film, directed by Anthony Asquith and starring Norah Baring and Uno Henning.  The cameraman was Stanley Rodwell.  It was the last of Asquith's four silent films, produced exactly on the cusp of the transition from silents to talkies in British cinema, a point which is referenced in the film itself.

Chamber of Horrors (Madame Tussauds): The Chamber of Horrors was one of the attractions at Madame Tussauds in London, being an exhibition of waxworks of notorious murderers and other infamous historical figures.  The gallery first opened as a 'Separate Room' in Marie Tussaud's 1802 exhibition in London and quickly became a success as it showed historical personalities and artifacts rather than the freaks of nature popular in other waxworks of the day.  It closed permanently in April 2016.

The Woman in White (1929 film): The Woman in White is a 1929 British silent mystery film directed by Herbert Wilcox and starring Blanche Sweet, Haddon Mason and Cecil Humphreys.  The film was made at Cricklewood Studios in London.  It is based on the novel "The Woman in White" by Wilkie Collins.

Piccadilly (film): Piccadilly is a 1929 British silent drama film directed by E. A. Dupont, written by Arnold Bennett and starring Gilda Gray, Anna May Wong, and Jameson Thomas.  The film was filmed on location in London, produced by British International Pictures.

The Manxman: The Manxman is a 1929 British silent drama film directed by Alfred Hitchcock and starring Anny Ondra, Carl Brisson and Malcolm Keen.  The film is based on a popular 1894 romantic novel "The Manxman" by Hall Caine, which had previously been made into a film 12 years earlier.  It was the last silent film that Hitchcock directed before he made the transition to sound film with his next film "Blackmail".

The Silent House (1929 film): The Silent House is a 1929 British silent mystery film directed by Walter Forde and starring Mabel Poulton, Gibb McLaughlin and Arthur Pusey.  It was made at the Nettlefold Studios in Walton-on-Thames.  The film was based on a recent stage hit, but was not a success at the box office.

Little Miss London: Little Miss London is a 1929 British silent comedy film directed by Harry Hughes and starring Pamela Parr, Frank Stanmore and Reginald Fox.  It was made by British Instructional Films at Bushey Studios.  The screenplay concerns a business magnate who poses as a poor man while his daughter falls in love with a man posing as an aristocrat.

The Beetle (film): The Beetle is a 1919 British silent horror film directed by Alexander Butler and starring Maudie Dunham, Hebden Foster and Fred Morgan.  It was based on the 1897 novel "The Beetle" by Richard Marsh.

The Monkey's Paw (1923 film): The Monkey's Paw is a 1923 British silent horror film directed by Manning Haynes and starring  Moore Marriott, Marie Ault and Charles Ashton.  It is an adaptation of W.W. Jacobs's "The Monkey's Paw".

Supporting paragraphs: Chamber of Horrors (1929 film) Chamber of Horrors (Madame Tussauds)
Answer: Madame Tussauds