Jodie Whittaker has quit Doctor Who and will leave the show at the end of the next series, according to reports.
The 38-year-old intends to follow in the footsteps of predecessors including Matt Smith and Peter Capaldi by stepping down after three series at the helm of the Tardis.
Whittaker, the 13th Doctor, became the first woman in the role when she replaced Capaldi in 2017.
Co-stars Bradley Walsh and Tosin Cole departed the long-running BBC One sci-fi drama at the end of the New Year special.
Comedian John Bishop has been announced as new character Dan, who "becomes embroiled in the Doctor's adventures" and will star with Whittaker and Mandip Gill, who returns as Yaz.
Despite the shake-up, showrunner Chris Chibnall is set to stay.
Whittaker's departure will once again open up the role of the Doctor and prompt questions about a successor.
My Family and Death In Paradise star Kris Marshall has been linked with the role of the Doctor for a number of years and is favourite to replace her.
Coral bookmakers is also offering odds on Fleabag star Phoebe Waller-Bridge, Homeland actor David Harewood and Friday Night Dinner's Tom Rosenthal as potential successors.
Filming of the current series of Doctor Who is due to finish in the summer.
The BBC has said it will be shorter, with only eight episodes due to Covid-19 restrictions affecting production.