Who is Doctor Who's greatest ever Doctor?

It's a big and divisive question. Everyone's got their opinions, and Digital Spy has tackled the issue a couple of times: we placed Patrick Troughton top of our own list, while you lot overwhelmingly named David Tennant your favourite in a 2013 reader poll.

But now, we might have the most definitive ranking to date, with proper data behind it and everything.

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Using IMDb user rankings, we've crunched the numbers: adding up the scores of all the episodes from each Doctor's era, then working out an average score for that Doctor's episodes. Pretty technical, right?

(A couple of things to note before we get going – this ranking only takes into account full-length televised episodes, with no minisodes or spinoffs. And the War Doctor doesn't feature, since he doesn't have a bona fide 'era', his two TV appearances taking place in Eleventh Doctor stories.)

13. Paul McGann

Paul McGann in the 'Doctor Who' TV moviepinterest
BBC

Average episode score: 6.3 out of 10

Pity the poor Eighth Doctor, who – judged solely by the 1996 TV movie – is one of the fans' least favourite incarnations. That divisive film scored just 6.3 and, since it was McGann's only full-length outing on telly, that's also his average score.

(An important note: we're sticking to our guns regarding minisodes, but McGann's comeback in 'The Night of the Doctor' scored a terrific 9, which would have bumped up his average to 7.65 and transported him up the ranking.)

12. Jodie Whittaker

Jodie Whittaker in Doctor Who series 11 episode 4: 'Arachnids in the UK'pinterest
BBC

Average score: 6.5 out of 10

The 13th Doctor peaked at 7.8 (for 'Flux: Chapter Four - Village of the Angels') and troughed at 4.2 ('Orphan 55'), which places her lower than you might expect.

We wouldn't dream of accusing angry fan-boys of targeting the IMDb ratings as a way of venting their disdain for a female Doctor or woke storylines, but if that had happened, well, it would explain why a series that did so consistently well in the ratings and proved enormously popular with viewers appears so low in this ranking.

Expect to see 13's stock rise as the vote stabilises over time.

11. Colin Baker

Gesture, Performance, Thumb, Music, pinterest
BBC

Average episode score: 6.5 out of 10

Colin's first full series – the 13-part season 22 – averaged at 7.08, while his second, the 14-episode epic 'The Trial of a Time Lord', works out at 7.14.

But his unpopular first story – 'The Twin Dilemma', which makes up the final four episodes of season 21 – scored a paltry 5.3 out of 10, lowering his overall average score and landing him near the bottom of our list.

10. Sylvester McCoy

sylvester mccoy in his final 'doctor who' story, 'survival'pinterest
BBC

Average episode score: 6.9 out of 10

Unsurprisingly, the divisive season 24 (McCoy's debut) polls pretty low with an average of 5.8 out of 10. But from there, it's up and up: season 25 scores an average of 7.3, with season 26 at 7.6, earning the seventh Doctor an average episode score just short of 7 out of 10.

9. William Hartnell

William Hartnell as the first Doctor in Doctor Whopinterest
BBC

Average episode score: 7.3 out of 10

The original (you might say), Hartnell's first season – which ran for a mammoth 42 episodes from November 1963 to September 1964 – averaged at 7.2 out of 10.

The 39 episodes which make up his second season average at 7.3, while his third season, including stone-cold classics 'The Massacre' and 'The War Machines', is considered his best, with an average of 7.4.

Hartnell departed Doctor Who eight episodes into its fourth season, with his final two stories – 'The Smugglers' and 'The Tenth Planet' – averaging out at 7.3 out of 10.

8. Peter Davison

'Doctor Who': The Fifth Doctor erapinterest
BBC

Average episode score: 7.34 out of 10

The Fifth Doctor's final run, season 21, is considered his best, scoring 7.5 out of 10 (though that average is bumped up considerably by the high score of his four-part swansong, 'The Caves of Androzani', which itself comes in at 8.75 out of 10).

Next is his debut, season 19, with an average of 7.27, then his middle run of episodes, season 20, which manages a score of 7.24 out of 10.

7. Patrick Troughton

patrick troughton in doctor whopinterest
BBC

Average episode score: 7.57 out of 10

After taking over from Hartnell, Second Doctor actor Patrick Troughton appeared in 35 of season 4's 43 episodes, with his batch scoring an average of 7.6 out of 10.

His second run, Doctor Who's fifth season, is often considered one of the show's very best and here averages a very respectable 7.78.

Season six is considered Troughton's weakest, with an average of 7.36 lowering his overall score. Oh, my word!

6. Jon Pertwee

'doctor who' nicholas courtney as brigadier lethbridge stewart, with jon pertwee as the doctorpinterest
BBC

Average episode score: 7.61 out of 10

According to these IMDb stats, Pertwee came out of the gate incredibly strong, with his first season (the show's seventh) earning an 8 out of 10 average. 'Spearhead', 'Silurians', 'Ambassadors of Death', 'Inferno'... you can't knock it, really.

The average scores for his remaining four seasons go as follows: season 8: 7.5 out of 10; season 9: 7.3; season 10: 7.8; and season 11: 7.4.

High averages for 10th-anniversary special 'The Three Doctors' and Jo Grant's exit 'The Green Death' helped season 10 to an impressive showing.

5. Tom Baker

tom baker in 'doctor who', 'genesis of the daleks'pinterest
BBC

Average episode score: 7.7 out of 10

The great Tom, only at number five? Look, don't blame us, we're just the numbers guys.

Early Tom is considered to be the show at its best, with high scores for his first three seasons: season 12 – 8.02 out of 10, season 13 – 8.25, and season 14 – 8.25.

But with the departure of fan-favourite show boss Philip Hinchcliffe comes a dip in episode scores. Season 15 averages out at 7.39 out of 10, with season 16 (the 'Key to Time' year) a little better at 7.42.

Season 17 gets an average score of 7.31 – sure, 'City of Death' is great (8.85), but then there's 'The Horns of Nimon' (6.15). There's a slight rise for Tom's final year, with season 18 scoring 7.34.

4. Christopher Eccleston

'Doctor Who' series 1: the ninth Doctor and Rosepinterest
BBC

Average episode score: 7.93 out of 10

Though he only clocked in 13 episodes, Eccleston's one series of Doctor Who scores pretty well, with an average of 7.93 out of 10.

Highlights, according to these scorings, include 'The Empty Child / The Doctor Dances' and 'The Parting of the Ways' (9), while the lowlight was 'Aliens of London' (6.9).

Also, Eccleston will forever be The Doctor who ushered in Russell T Davies' reboot of the sci-fi classic, alongside much-loved companion Rose (Billie Piper).

3. Matt Smith

matt smith, doctor whopinterest
BBC

Average episode score: 8.3 out of 10

A fair showing for Matt Smith in the bronze position, but some may be surprised he's not a little higher on the podium.

Here are the stats: his first series (and Steven Moffat's) averages out at 8.08 out of 10, while the follow-up – series six – improves on it, with an average score of 8.65.

Series seven sees a dip, to 8.24 out of 10, but fans absolutely adore 50th-anniversary special 'The Day of the Doctor' which scores 9.3 out of 10.

2. Peter Capaldi

'Doctor Who' Christmas special: 'Twice Upon a Time'pinterest
BBC/BBC Worldwide

Average episode score: 8.45 out of 10

The last-but-one era of Doctor Who is ranked as one of the show's very best. His first run of episodes, series eight, averages at 8.4 out of 10, while his last, series 10, works out at a slightly lower 8.3.

Perhaps surprisingly, it's his middle run that's been voted Capaldi's best, with an average of 8.7 out of 10. That average is bumped up considerably, though, by the high score afforded to 'Heaven Sent'.

At 9.6, 'Heaven Sent' is the second-best Doctor Who episode ever (according to IMDb scores, that is). It's bested only by 'Blink', which gets a near-perfect 9.8 out of 10.

1. David Tennant

doctor who's david tennant in the tardis
BBC//BBC

Average episode score: 8.7 out of 10

It will surprise nobody that Tennant comes out on top, officially labelling him the greatest Doctor of them all (according to the IMDb user scores at least).

His three series and the five specials that followed all boast a healthy and pretty consistent score and are a sizeable chunk ahead of pipped to the post Peter Capaldi.

Series two is thought to be his weakest, with an average of 8.44 out of 10, while series three – which includes classics like 'Blink' and 'Human Nature / The Family of Blood' – averages out at an even better 8.62.

Even that's nothing compared to series four, which – with an average score of 8.94 out of 10 – is the highest-scoring series from Doctor Who's entire 55-year run. Take a bow, DT!

Doctor Who returns later in 2023 on BBC One in the UK and Disney+ elsewhere. Meanwhile, in the US, the show airs on BBC America, with series 1-12 available on Max.

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Headshot of Rebecca Cook

Previously Deputy TV Editor at Digital Spy and, before that, a TV Reporter at The Mirror, Rebecca can now be found crafting expert analysis of the TV landscape, when she's not talking on the BBC or Times Radio about everything from the latest season of Bridgerton or The White Lotus to whatever chaos is unfolding in the various Love Island villas.  When she's not bingeing a boxset, in-the-wild sightings of Rebecca have included stints on the National TV Awards and BAFTAs red carpets, and post-match video explainers of the reality TV we're all watching.