RATINGS! Big Brother 2017 was the least watched series to date

Big Brother 2017 Diary Room chair

Big Brother 2017's viewing figures were the least watched to date, based on overnight ratings.

With the final all wrapped up, the 18th Big Brother UK run averaged just under 900,000 viewers across its 54 days.

The show started with a relatively strong 1.3 million viewers, despite a head to head clash with Love Island.

Across the first week, numbers held relatively steady at 1.1 million viewers but dipped below 1 million in week two.

From there the show never recovered, despite controversies such as Lotan's ejection and this week's ex-housemates return.

Ratings hit a low in the penultimate week when fewer than 700,000 tuned in over the Saturday an Sunday episodes.

Friday's final averaged just over 900,000 viewers, actually down on the previous Friday and even below some of the regular highlights episodes. The final was down some 600,000 viewers on last year and 400,000 on 2015.

Overall, 2017's series averaged 250,000 viewers below 2016 based on overnight data.

Meanwhile in the latest consolidated figures - which include those who catch up in the seven days after each episode airs - the series average so far is 1.2 million.

This compares to 1.6 million in 2016 and 1.4 million in 2015, with the official viewing figures for the final week of this year's series still to be confirmed.

As it stands there is one further series of Big Brother in Channel 5's current contract with programme makers Endemol, due to air next summer.

Before then, the new summer series of Celebrity Big Brother will no doubt be hoping to put in some better ratings numbers when it launches this Tuesday night on Channel 5.

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