Bruce Forsyth and Tess Daly returned as co-presenters of the main show on BBC One, while Claudia Winkleman returned to present spin-off show Strictly Come Dancing: It Takes Two on BBC Two.
Len Goodman, Arlene Phillips, Craig Revel Horwood, and Bruno Tonioli returned to the judging panel.
The first programme was a catch-up show and preview of the new series before the start of the competition on 6 October.
In a change to the previous format, the results show aired on Sunday rather than later on Saturday.
Mis-Teeq singer Alesha Dixon and Matthew Cutler were announced as the winners on 22 December, while EastEnders actor Matt Di Angelo and Flavia Cacace finished in second place.
Color key: Unless indicated otherwise, individual judges scores in the charts below (given in parentheses) are listed in this order from left to right: Craig Revel Horwood, Arlene Phillips, Len Goodman, Bruno Tonioli.
Kelly Brook withdrew from the competition earlier in the week after the death of her father.