Who's Who now, Billie, as Gatwa bows out?

NCUTI Gatwa has left Doctor Who and said he “loved every minute of it” as he is seen regenerating into Billie Piper in the season finale.

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Piper, 42, first appeared in the series as the companion to the ninth Doctor in 2005, playing Rose Tyler alongside Christopher Eccleston’s Time Lord - and then again for the 10th Doctor played by David Tennant.

Piper appeared to replace Gatwa, who leaves Doctor Who after two seasons in the science-fiction series, as she arrived on screen with the words “Oh, hello!”

Piper said: “It’s no secret how much I love this show, and I have always said I would love to return to the Whoniverse as I have some of my best memories there, so to be given the opportunity to step back on that Tardis one more time was just something I couldn't refuse, but who, how, why and when, you'll just have to wait and see.”