Channel 5 have made sure that Big Brother won't see an escapees when the show returns to screens next month. The broadcaster has spent thousands adding high reinforced walls around the Big Brother house in Elstree in a bid to prevent any of the show's stars and housemates from breaking out.
The move comes after the show's decline on Channel 4 saw more and more housemates trying to get out, resulting in cancelled evictions, lost voting revenue and headaches for show bosses.
In 2009 Kenneth Tong escaped by climbing over the roof in the early hours of the morning whilst facing eviction, helped by fellow housemate Marcus Akin. "I came in here a legend, I'll go out as one," Kenneth said before escaping.
Later that series ALL of the housemates managed to escape the house and found themselves in the camera runs and mixing with those 'from the outside world'. As a result Big Brother removed the prize fund, forcing the group to earn it back in a series of tasks. Eventual winner Sophie Reade ended up walking away with around £72,000.
Last year saw John James escape from the house TWICE through fire exits, while Big Brother 11 winner Josie also walked out of Ultimate Big Brother when she ran out of another hidden doorway.
A source said: "Health and safety laws mean there needs to be some exits in the house, but this year they will be manned 24/7. Any housemate trying to use them to leave will find it hard.
"The walls around the garden have also been made higher and protected with more fencing.
"Finally, they've put up another 10 foot high fence around the entire perimeter of the whole Big Brother house to make sure no one leaves the compound."
As always, housemates can still walk from the house by visiting the Diary Room and speaking with Big Brother.
The show returns next month with a celebrity series, stars lined up to appear reportedly include the likes of Rachel Stevens, Sarah Harding, Boy George and Jedward.
A 'normal' series of Big Brother will follow straight after in September.