[citation needed] Unbeknownst to the housemates, an actor controlled by the viewers, Michael Dylan - otherwise known as "The People's Puppet" - entered the house on launch night, and this was revealed to them upon his departure on Day 9.

[4] For the first time in regular Big Brother history, no new housemates entered the house following the two launch nights.

[6] Willis continued to host Bit on the Side along with Rylan Clark and AJ Odudu, who replaced Jamie East and Alice Levine.

[10] On 13 March 2013, it was reported that Brian Dowling had been removed from presenting Big Brother and that Emma Willis would be taking over.

[12] On 17 April, Alice Levine and Jamie East both announced via Twitter that they had left spin-off show Big Brother's Bit on the Side after six series.

[13][14] Clark initially denied he would be hosting the show,[15] but Channel 5 officially confirmed on 14 May that Clark and AJ Odudu would join Willis as presenters of Big Brother's Bit on the Side; and that Willis would continue her Bit on the Side role in addition to taking over as host of the main show.

[16] Plus, Big Brother's Bit on the Psych aired on Saturday nights, with Odudu as the sole presenter, and included guests and psychologists examining housemates' behaviour during the week.

During the live eviction show, for the first time, nominated housemates were given thirty seconds to broadcast a 'plea' explaining why they think they should stay in the house.

Channel 5 admitted that they deliberately "fooled" fans by concealing the eye as a tie-in to the 'Secrets and Lies' theme of the series.

[19] Inside the house, as housemates entered, they were greeted by a huge wall containing recycled life-sized doors.

[21] On 19 June 2013 episode of Big Brother's Bit on the Side, rumours arose of a secret bedroom visible in this year's house plan.

[25] On 19 May, a second teaser aired which featured two doors that were pink and blue, as well as asking viewers to guess "#whatsthesecret".

[26] These teasers led to speculation that the new series could be based on a similar premise to Secret Story, a spin-off format of Big Brother that has been successful worldwide.

[28] The series sponsor was casino website and TV programme (that airs nightly on Channel 5) SuperCasino.

Housemates ordered their shopping from online grocery business Ocado, using an iPad, as part of another product placement agreement.

29-year-old Michael Dylan from Cork entered the house as "The People's Puppet" on Day 1, and was hired by Big Brother as a housemate who was controlled by the viewers.

[33] More than 150 people complained to television watchdog Ofcom after Big Brother issued Jemima Slade a formal warning on Day 4 over her apparent offensive comments towards Gina Rio.

[34] On Day 33, Daley became the first housemate to be ejected from the Big Brother House since the show moved to Channel 5.

Channel 5 later chose to broadcast the footage that caused the ejection which showed Daley slap Hazel's behind, clasp her by her throat and pin her down against her bed.