Rosie Stancer and Fiona Thornewell are walking separately and unaided to the South Pole.
Rosie Stancer, perched amid the ice, joins Jenni on a satellite phone, to tell her how excited she's getting at the prospect of a rare Christmas call to her family.
But Fiona Thornewell's satellite phone isn't working and her husband Mike joins Jenni to talk about how he and his family are feeling about a Christmas without contact with her.
Psychologist Carol Martin Sperry also joins them to talk about the difficulties in coping without a partner in the festive season.
