Sian Welby has finally revealed the real reason she is was banned from the Big Brother House.

The ITV star, 37, explained the hilarious story to Big Brother host Will Best during a chat on Capital FM with so-hosts Jordan North and Chris Stark. 

During the discussion, the hosts discussed their time on the reality series before the topic of Sian's accident came up. 

The presenter then revealed that she had not been back to the Big Brother house after revealing a secret behind the iconic building. 

The radio host explained that she had broken part of the set while joking around during a visit and the producers were not happy.

Sian said the mistake happened the day before the set and since the mishap she has not been back.

The blonde beauty told Will: 'At the time I couldn't talk about it  - I wasn't allowed.

'I genuinely got in a lot of trouble for this but it was so innocent. So this time last year a lot of us got invited down to see the house.

'When I went to see it, it was the day before the launch and I was with one of our video producers, Emi. 

'So we were going in all the cupboards and going on the bed and so what we thought was "lets be clever about this, let's get a reverse shot of me looking into the wardrobes."

'So to do that she had to get inside the wardrobe and then I said "well let me get a picture of you inside the wardrobe because it'll make us laugh one day".

'As I went to take the picture, she literally fell through the back of it.'

Sian added 'This is the day before launch, she fell through the back.; while showing Will a video of Emi falling backwards against a white cupboard wall, breaking it and revealing a grey outside area.

The clip showed the video producer lying flat on her back with the cupboard door on top of as she attempted to left it up to climb back through. 

'And you know like in the Truman show where everything is revealed behind, the back of those wardrobes is in to a big warehouse.' Sian continued. 

Sian added that her and her producer Emi 'got very much told off' for their innocent mistake. 

Will added: Well it's a sound stage  - it's not a real house guys.' 

Will then rubbed salt in the wound by saying: 'You broke the Big Brother house.'

Sian then conceded: 'Yeah but like the day before and because it was late at night as well and they were looking at us like "how are we going to get this fixed in time for launch tomorrow".

Will then asked whether she had ever been asked back to which Sian replied with a very firm 'no'.

It comes after co hosts Will and AJ Odudu revealed that bosses have 'raised the bar' with 'phenomenal' new tasks in the new series, as fans count down to the show's return on Sunday.

The ultimate social experiment is set to return on October 6 with a new crop of housemates, after the show was revived by ITV last year.

Speaking to MailOnline ahead of the live launch, Will hinted that after an array of big-budget tasks last year, fans can look forward to even more during the new series.

Fan-favourite challenges in the first civilian series included the Big Wigs, the Ant Kingdom, and Big Brother's Hunger Games.

He said: 'I'm excited about the tasks. I think the tasks this this year, I think maybe some learning maybe not learning because that made it sound like there were things that could have been better.

AJ added that after the success of fronting both a civilian and celebrity series with Will, they're feeling 'less nerves' as they go into the 2024 run.

She added: 'This series, I’m going to be less nerves, more excitement. What I've learned from the previous series, is that you just never know what's gonna happen.