Doctor Who: Will The Current Companions Stay With The Fourteenth Doctor?

gamerant.com:

The new era of Doctor Who is quickly approaching. Russel T. Davies, who previously helmed Christopher Eccelston and David Tennant’s time portraying the famous hero, is back in the lead creative role as he attempts to revive the series after a stretch of poor reviews and ratings. After all the excitement surrounding Jodie Whittaker, the first female to lead the show, becoming the new Doctor, her time (through no fault of her own) appears to be going out with a whimper.

This new era is set to begin with David Tennant and Catherine Tate returning before the fourteenth Doctor takes over, although the specifics of the story remain to be seen. However, it's unclear how often Tennant will remain in his former role, as actor Ncuti Gatwa is confirmed to be coming to the show to take on the role of the Fourteenth Doctor. Considering that both a new Doctor and a new showrunner will be coming to the program, viewers can expect to see a lot of change in the show's upcoming seasons. To a certain extent, fans have been curious whether the current companions of Jodie Whittaker will be kept around in this new era.

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Interestingly, Whittaker’s time as the Doctor has seen her take a somewhat lesser role (if it can be described as such) compared to some of her predecessors, with the companions given a lot of character work. There have also been several companions, often together in groups, traveling alongside the Doctor. This concept is quite a change from the classic one Time Lord, one human sidekick that Russell T Davies seemed particularly fond of when he was in charge. Steven Moffat also favored this approach, usually having no more than two companions with the Doctor at one