After completing the first challenge, Derbyshire said: “First trial done. Feel ecstatic that we got so many stars and that it’s all over.”
However radio DJ Jordan North described the task as “absolutely horrific”.
The episode also saw the group completing an abseiling challenge in order to get rucksacks containing kit.
The stars were split into two groups as they were introduced to each other – with Kay, actress Jessica Plummer, North, podcast host Giovanna Fletcher and Derbyshire being taken to the top of a rockface.
Ant and Dec return as hosts
PA / ITV
Richie, actress Beverley Callard, dancer AJ Pritchard, Sir Mo and Paralympian Hollie Arnold were dropped off at the bottom.
Celebrities at the top of the cliff were then paired with a campmate at the bottom and they had to work together to abseil down the cliff, with the group having to retrieve 10 rucksacks in total.
The rucksacks were padlocked to the cliff, and in order to free the bags the celebrities had to answer numerical-based questions about their fellow campmates.
Questions included Sir Mo’s age when he received a knighthood and the peak album chart position for Richie’s country album.
North was sick before having to do the challenge.
“I can’t believe I was sick, I’ve only been here five minutes and I’m puking up already,” he said.
Once the celebrities headed to their camp, which is this year based in North Wales rather than Australia due to coronavirus restrictions, Plummer began to get upset and had to be comforted by Derbyshire.
She said: “I said to my daughter before we left each other that if she misses me when she’s at home, she looks for the moon, I can look at the moon and we can both see it.”
Later, she added: “We’re all in the same situation and we’re all in it together and this is the experience of a lifetime and I want to make my family proud so they don’t want to see me crying and upset.”
I’m A Celebrity… Get Me Out Of Here! continues on ITV.