Tonioli marks the first big major shake-up of the series line up in 10 years.
Speaking about the new line-up, Ant McPartlin said he's still in touch with Walliams and "misses him", telling : “We text a lot, we see him socially, so we were really kind of apprehensive about starting this new series.
"But on the first day of auditions, we thought, ‘we’ve got to just treat Bruno like the new guy and be kind to him’. And he was really nervous."
Other comments saw him swear about an elderly couple who had joked about him during an unsuccessful audition.
In a statement released shortly afterwards, Walliams said: “I would like to apologise to the people I made disrespectful comments about during breaks in filming for Britain’s Got Talent in 2020.
"These were private conversations and – like most conversations with friends – were never intended to be shared. Nevertheless, I am sorry.”
An ITV spokesperson added: “We do not condone the language outlined in these allegations, and we have spoken to the producers of Britain’s Got Talent.”
Filming for the new series got underway in January 2023, with Tonioli already causing a stir by accidentally pressing the golden buzzer more than the one time he's allowed.
He later revealed he didn't understand the concept of the special buzzer, which automatically sends a contestant through to the live show. All judges are typically given the opportunity to use it once, with Ant and Dec also getting a decision as well.
In the meantime, Ant and Dec are continuing their reign as the kings of Saturday night TV.
Kicking off the year with quiz show Limitless Win, the pair will be back from this Saturday (25 Feb) with the return of favourite Saturday Night Takeaway.
Britain's Got Talent has yet to be given an airdate, but is expected to arrive after Takeaway ends.
WATCH: Bruno Tonioli has been confirmed as David Walliams’ replacement on ‘Britain’s Got Talent’