The three final couples from each series were set to feature on tomorrow night's BBC show, presented by Bruce Forsyth and Tess Daly. But Martin is standing in for Chris Parker, who pulled out and quit EastEnders after a reported suicide attempt.
Aled is standing in for Julian Clary - the camp comic never imagined he would make the finals so agreed to appear in a pantomime.
Ladbrokes make Jill favourite to win tomorrow night at 1-3, followed by Natasha at 7-2. Lesley and Denise are both third at 8-1, followed by Aled at 16-1 and Martin at 40-1. Ladbrokes spokesman Warren Lush said: "Money suggests Jill will wipe the floor with Natasha. "Punters are convinced she'll be the belle of the Christmas ball."
The Strictly Come Dancing Special is broadcast tomorrow on BBC1 at 8pm with a results show at 10pm.