[3] Celebrities participating on the programme nominate a charity to receive a donation from ITV, with the money raised from charges on voting via text, phone or interactive services.

[4][5] I'm a Celebrity is often a ratings winner for ITV, attracting on average over 9 million viewers each series, with its success spawning an international franchise of the same name.

Prior to the airing of the nineteenth series in 2019, ITV announced that eating trials would no longer contain live bugs.

This involves two or more celebrities going into the jungle to perform a task that releases an item to open a container with an amount of dingo dollars.

The first series of the show in 2002 was filmed on a smaller site that was once part of King Ranch (officially El Rancho del Rey) in Kooroomool,[11][12] near Tully, Queensland, in Australia.

[2] For the fifth series in 2005, there were reportedly plans to relocate the show to the coastal town of Cardwell in Queensland; however this did not happen due to logistical problems and time constraints in building the new set and required infrastructure.

In August 2020, it was confirmed that due to the COVID-19 pandemic, the twentieth series would be filmed in Gwrych Castle in Abergele, North Wales.

[14] As part of the agreement with Gwrych Castle Preservation Trust, ITV will help support the ongoing restoration project of the site.

[15] This has included the adding of permanent roofs to certain sections of the castle and repairs to the walls, floors and stairs to make the building safe and secure.

ITV has reportedly donated £300,000 to the trust for the use of the site for four months, as well as paying for additional emergency restoration work.

On 2 August 2021, it was confirmed that the show would return to Wales for a second series, due to "continued uncertainty" over the COVID-19 pandemic and travel restrictions.

The show's theme music is credited to Grant Buckerfield and contains samples of "Africano" by Earth, Wind & Fire and "Get Out of the House!"

In November 2006, the series was forced to enhance its procedures after Ofcom found that it had breached Rule 1.16 of the Broadcasting Code for airing bad language before the watershed.

Due to late running, seven percent of phone and text votes for that episode of the show were not counted, although this did not affect the result.

[23] Former Sex Pistols manager Malcolm McLaren, who was due to appear on the seventh series but pulled out at the last minute, alleged that the show and the choice of winner was fixed, and the trials posed no real danger.

[24] In 2009, ITV apologised for not having properly advised the contestants in the ninth series of the relevant Australian legislation regarding animal cruelty.

[25] Gino D'Acampo and Stuart Manning were charged by New South Wales Police after RSPCA Australia complained over their killing and eating of a rat during the show.

[27] The fifteenth series saw Ferne McCann eat a live water spider as part of a bushtucker trial.

There were calls for fellow contestant Rebekah Vardy to be cut as a mental health ambassador, due to her alleged role in the 'bullying'.

On the ITV programme Good Morning Britain the day after her eviction, Vardy defended herself for remarks she made about Iain Lee in Extra Camp, the ITV2 spin-off series, stating that she was "under pressure", and that they were taken out of context.

After his eviction from the camp, Dennis Wise also said on Good Morning Britain that he and Lee were on friendly terms, and said that ITV would not allow bullying on the show.

[31] That same year, Chris Packham wrote an open letter to Ant & Dec expressing his desire for them to retire the bushtucker trials.

[33] In November 2020 rural crime officers from North Wales Police began investigations into the ITV network after TV presenter and naturalist Iolo Williams complained that non-native insects, used in the show at Gwrych Castle, could escape and pose a threat to ecosystems.

Gwrych Castle woods is a site of special scientific interest (SSSI), as is the nearby Coed y Gopa, managed by the Woodland Trust.

Two weeks prior to the start of the series, all participants, crew, and presenters were isolated to ensure that social distancing is not needed during filming.