Laura Birn's character Theresa says that her father was English and her mother was a Finnish hippie. Birn is in fact Finnish and was born to Finnish parents in the nation's capital, Helsinki.
Exterior shots of the house were filmed on Willow Bridge Road, Canonbury in the London Borough of Islington.
It isn't a universal rule to take off your shoes indoors in the UK, it is however increasingly becoming likely due to influences from other cultures and the rather obvious scientific claims regarding health hazards.
The film was partially shot at the Port of Dover ferry terminal in Kent.
London House (2015) is a British thriller written and directed by David Farr in his feature debut. It was shown in the Panorama section at the 66th Berlin International Film Festival and released on 11 March 2016 in the United Kingdom. It stars Clémence Poésy, Stephen Campbell Moore and David Morrissey.