Dragons' Den star Duncan, 66, is set to enter the jungle for the brand new series of the ITV show.
Duncan, who has found success funding hotels, real estate property and spas, was seen arriving at Brisbane airport on Monday and looked in good spirits as he was snapped by photographers.
Duncan's arrival follows on from royal biographer Lady Colin Campbell, former Newcastle midfielder Kieron Dyer and Hollyoaks actress Jorgie Porter, who confirmed she would be going into the jungle.
New reports today appear to list the final line-up of celebrities tipped to enter the jungle.
This includes former Geordie Shore star Vicky Pattison, Made In Chelsea's Spencer Matthews, former world champion boxer Chris Eubank, famed choreographer Brian Friedman, TOWIE's Ferne McCann, Union J's George Shelley, and Susannah Constantine, half of Trinny and Susannah.
Most Haunted star Yvette Fielding accidentally let slip she was entering the jungle after sending out a tweet to fans before quickly deleting it.
ITV are yet to officially confirm the line-up.
The new series of I'm A Celebrity kicks off on Sunday 15 November.
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