"It should be great fun and I'm looking forward to catching up with old friends."
Mark will be doling out some advice to Arg, who is getting ready for a his first Christmas after splitting from Lydia Bright.
An insider said: "Mark has been dishing out some tough love and telling Arg what he really thought of what he's been up to.
"Mark slates him for charging into the sea with just his pants on that time. Arg is sucking it all up as he knows Mark has his best interests at heart."
The show will air on Wednesday on ITV2.