Series 1 followed the lives of the Hughes family consisting of parents Simon and Jane, and their four children - Jessica (22), Emily (19), Charlotte (17), and Tom (14) who live in Harbledown, Canterbury, Kent. They had more than 20 cameras placed in their semi-detached home, capturing their every move over a period of four months and were controlled from the house next door.

Series 2 followed the lives of the Grewals, a British Indian family consisting of parents Arvinderjeet and Sarbjit, and their three children - Mandeep (33), Gurdip (32), and Tejind (23) along with Mandeep and Gurdip's spouses - Gursharonjit (24) and Jitender (36), respectively, who live in west London. The format differed slightly from the first series in that micro-interviews with family members were interspersed periodically throughout the programme, commenting about the issue in the episode.

Series 3 followed the lives of the Adesinas, a Nigerian British family consisting of parents Sunday and Vicky, and their four British children - Ayo (27), Julie (25), Olu (23), and Ola (15) who live in Hackney, east London.