The series ran for 64 days, ending on 11 November 2011 when the winner, Aaron Allard-Morgan, won half of the £100,000 prize fund, with the remainder split between the five finalists.

[6] Meanwhile, Endemol UK had been granted permission to keep the Big Brother House at the Elstree Studios, Hertfordshire, until 30 September 2013.

[7] On 6 April 2011, Channel 5 formally confirmed that they had signed a £200 million two-year contract with Endemol to screen Big Brother from 18 August 2011.

[9] Big Brother 2010 winner Josie Gibson took part in filming at the London auditions meeting potential housemates.

[10] From 23 July 2011, trailers announcing the imminent return of the celebrity version of the series were aired using Marcus Bentley's voice.

It featured a large cast of past housemates dancing and miming in the streets, finally meeting up in a park with CGI effects adding a fly-past with coloured smoke overhead.

The launch was also trailed heavily in the printed media, including an advertising blitz in the Desmond-owned newspapers and magazines and posters in town centres.

In the bathroom, the installation of a transparent double shower cabinet with a frosted central band offered minimal privacy.

There was a large central free-standing oval bath, with small pink and blue hand towels provided.

The bathroom was mainly blue and pink with a sofa and a clear view of the goings on from the living room and garden.

It was located near the main house, adjacent to the garden, and was decorated with Gothic-effect mouldings, gravestones, cobwebs, church candles and skeletons.

They also placed daily preview clips from the action in the house on the dedicated website and YouTube page, with frequent updates on social media sites Twitter and Facebook.

From the Crypt, Jay and Anton, dressed a ghouls, were able to watch the remaining housemates and performed a series of pranks on them.

After revealing themselves in scary fashion, Anton and Jay had to nominate two other housemates for eviction, choosing Jem and Harry respectively to face the public vote.

[16] On Day 52, nominations took place on a Sunday, with housemates dressed up in Halloween costumes and sat in electric chairs in the garden.

[19] On 8 September, the evening before the launch night, presenter Brian Dowling confirmed a "surprise guest" twist involving Canadian model and Baywatch star Pamela Anderson who would enter the house on launch night to host a party and set a number of tasks for the housemates during a four-day stay.

On the night of Day 41, a number of ex-celebrity and main series housemates and other VIP guests re-entered the Big Brother house to preview the horror movie Paranormal Activity 3 at a special red carpet premiere showing of the film.

They joined current housemates Aaron, Jem, Louise and Tom who had won places at the event during an earlier task.

Guests attending the event included Celebrity Big Brother 8 winner Paddy Doherty and fellow housemates Bobby Sabel and Lucien Laviscount.

[22] Also attending were former Big Brother UK housemates Nikki Grahame and Imogen Thomas, Hollyoaks actors Kieron Richardson and Bronagh Waugh, singer Michelle Heaton and reality show star and author Katie Price.

presenter Kim Woodburn entered the house to inspect the state of domestic hygiene and to set a shopping task called It'll be all white to keep a pre-rewarded luxury budget of £300.

[24] She promised to return at the end of the day to judge their efforts with the cleaning and the shopping tasks, with money deducted for soiling the outfits.

[26] After the relative success of Celebrity Big Brother 8, the main show struggled in the ratings for the majority of its run.