The format of the show is that the celebrates are asked to nominate a charity in which a producer  

ITV Studio make donations and the celebs are get paid for their stay in the Jungle during the period. they raised funds by allowing the users to vote for their best celebrity through their phone. 

Bushtucker Trail which is mission in which celebs have to complete the mission in which animals like snake, spiders and also other creepy animals involve. 

For the very first time the show format is changed. The new voting system introduced that is now voting is open to the public and they can vote for who will take part in first trail previously viewers can vote for the unlucky member of the Im a Celebrity 2021. 

The very first show of Im a Celebrity : set me out of here was shot in Australia, Queensland ear Tully on a smaller site at King Ranch in 2002. 

The second season in 2003 was shot in New South Wales, Australia. Since the season season till the year 2019 all the season shot in there. Second series has been filmed near and around Springbrook National Park. Australia near Murwillumbah, New South wales. 

From 2020 the location shifted to Gwrych Castle in October. Due to the corona virus pandemic the 12 series was confirmed to shot and filmed in Gwrych Castle in North Wales. 

It is reported that ITV has donated around £300,000 to the trust for the purpose of the use of the area and castle for the period of four month.