Stephen Mulhern was one of several contenders tipped to stand-in for Ant McPartlin on last year's I'm a Celebrity.
The Geordie presenter took a break from his TV commitments to focus on his recovery following a challenging 2018.
But the Mirror reports Mulhern was adamant he would not "step into a friend's shoes", and says Holly Willoughby was "perfect" on the show.
The 42-year-old says it really needed a female voice in the Outback and that he loved every minute of the series.
Britain's Got Talent fans share their joy after 'happy and healthy' Ant McPartlin returns to TV
Speaking to The Sun, Mulhern said: "It was the best possible choice, you couldn’t have gone with another guy.
“It had to be a female host and Holly was perfect. Holly and Dec worked a treat."
Ant, 43, was involved in a car crash in March last year and later pleaded guilty to drink-driving.
He was fined £86,000 and banned from driving for 20 months.
Ant has now reunited with Dec for presenting duties on the latest series of Britain's Got Talent .
Mulhern said: “When we were in Florida for Takeaway last year there was talk about me doing a lot more stuff on the show.
“But you can’t replace Ant. I’m not going to step into a friend’s shoes. I couldn’t do as well as him and I’m just pleased he’s back.”
Viewers were thrilled to see nothing much has changed as Ant and Dec were finally reunited.
Fans were quick to notice how healthy the troubled presenter looked and how the chemistry was still there.
"I’ve missed Ant and Dec so much, I’m so happy that Ant is back and looking so happy and healthy," one fan wrote.
"My Saturday nights are complete again!" a viewer posted on twitter.
"Britain's Got Talent is back but most importantly Ant & Dec are reunited and I don't ever want them to be separated again!" wrote another.
And and Dec bring ITV a record audience as new Britain's Got Talent makes debut
The boys are back: Ant's emotional return to Britain's Got Talent
