Ahead of tonight's live show, Dec took to Twitter to reveal that he had been busy rehearsing all afternoon to make sure the episode was ideal for fans.
The live Saturday night entertainment show will return to TV tonight and the biggest part of the show is the live audience.
ITV made the decision to pull last week's episode of "Saturday Night Takeaway" following Ant's arrest but the broadcaster later confirmed that the final two episodes would be aired as normal but with Dec presenting for the first time on his own.
Dec was supported by his co-stars Scarlett Moffat and Stephen Mulhern, who had expanded roles on tonight's show to help fill the gap left by Ant.
Ant was charged with drink-driving following a collision on March 18, and is expected to appear in court on April 4. Have a great Good Friday!
An earlier photo showed the studio being prepared for tonight's show, along with the caption: "It's a studio day today, which means we're back on your telly tonight!"
Ant became convinced his co-presenter Dec was a mole after talking to Joanna Lumley, who also featured in the series, and gave Dec an almighty telling off.
Producers are still deciding whether Dec speak about Ant or ignore the matter entirely.
An insider from the show has revealed to The Sun that explaining the 42-year-old's absence has been the most hard aspect of planning for this week's show.
"The bosses are torn in regards to how they can hit the right tone".
"They want to be respectful. while not bringing down the mood of the show".
The show - which was cancelled last Saturday - was labelled a success as Dec oversaw an nearly seamless live 90-minute show with his only mishap dropping a carton of popcorn.
The source added that producers are anxious that a "sombre start" will affect the show, as it is all meant to be about having fun.
Saturday Night Takeaway is set to conclude next week with a special from Florida on ITV at 7pm. "But Dec is professional and is determined to do a good job".