Doctor Who fans left 'grinning like idiots' as the show delivers multiple blasts from the past!

Jodie Whittaker's last Doctor Who episode formed part of the BBC's 100th birthday celebrations, so people expected a few nods to the show's 59-year history.

Bt while the more casual viewers enjoyed the action-packed 90-minute special and the anticipation of Jodie Whittaker's 13th Doctor regenerating into a 14th Doctor, for die-hard fans, the show was a nostalgia-packed treat like never before.

Fans had been ready for the return of companions Tegan and Ace, who appeared for the first time since the 1980s. However, they were in no way prepared for the plethora of former Doctors and companions who rocked up for the episode.

The plot saw the Doc forced into a regeneration alongside her archenemy The Master. However, her resistance to what was happening took her to a place within her own mind, where she chatted with some previous Doctors. She also found a way to appear to her companions as a hologram, often turning into other versions of herself as she did.

Viewers were treated to the fifth, sixth, seventh and eight Doctors — Peter Davison, Colin Baker, Sylvester McCoy and Paul McGann — as well actor David Bradley playing the first incarnation of the Time Lord. The 'Fugitive' Doctor Jo Martin even turned up for a turn.

Old-school fans of the show were delighted when the two 1980s companions got scenes with 'their' Doctor, Ace opposite the seventh and Tegan opposite the fifth. And the fans found it an emotional experience. "I'll be over here grinning like an idiot," said one. While another added, "Yep... tears" about the scenes.

But the fan-pleasing fun wasn't over. Towards the end of the episode, it was revealed there was a companions of the Doctor 'support group' where the Doc's friends met to swap stories.

As well as more recent companions Dan and Graham (John Bishop and Bradley Walsh), 'classic' companions were also there, with Melanie Bush (Bonnie Langford), Jo Jones (Katy Manning) and even one of the Doc's very first companions, Ian Chesterton (played by 97-year-old William Russell) making an appearance.

To say fans were happy is rather an understatement. "Waking up to a world where a whole new generation is meeting Ace and Tegan is just the best feeling. Not to mention those asking about Jo, Mel and Ian too. This feels so right," said one fan. Another added: "This is perfect."

After all that looking back, the episode also ended with something from the show's history – as Jodie's 13th Doctor regenerated into David Tennant's version of the Time Lord, rather than the previously announced 'new' Doctor, actor Ncuti Gatwa.
Viewers were left with no explanation for the strange occurrence  – but all will be revealed when Doctor Who returns next year.