Feature by Joel Lewis.

Previously, I did a deep dive into the Doctor Who ratings for Series 15. Now that the final consolidated figures for the latest spin-off, The War Between the Land and the Sea, are available, I thought it was worth having a closer look at how the show performed. And there are some very interesting things to note.

What makes this worth examining is not just the numbers themselves, but the surrounding context, particularly how the BBC chose to position the show.

A step back from the Doctor Who brand

One of the most striking aspects of The War Between the Land and the Sea was how lightly the Doctor Who connection was handled in its marketing. Doctor Who was not mentioned in the trailers, the Whoniverse ident was noticeably absent from broadcasts, and the broader franchise language that was heavily emphasised when Russell T Davies returned was scaled back.

This feels like a conscious decision rather than an oversight. It suggests an awareness that the Doctor Who brand may not currently be carrying quite the same universal pull with casual viewers as it once did. Against that backdrop, the viewing figures become especially revealing.

The overnight figures

Looking first at overnight viewing for Doctor Who for comparison’s sake, Series 14 averaged in the low to mid two millions, typically landing between around 2.0 and 2.6 million, with the Special pushing significantly higher.

Series 15 saw a clear decline. Overnights averaged roughly 1.8 to 1.9 million, with several episodes falling closer to the mid one millions. While not disastrous by modern standards, it marked a noticeable softening of live engagement.

The War Between the Land and the Sea, meanwhile, sits above Series 15 on this measure. It launched at just under 2.9 million and averaged around 2.2 to 2.3 million across its run. For a spin-off, that is a notably healthy performance and suggests the audience was willing to sample it in decent numbers.

Consolidated viewing

Overnights only go so far, particularly for a show like Doctor Who, where catch up is increasingly crucial.

On +7 consolidated TV only figures, Series 14 generally averaged around 3.5 to 3.7 million, buoyed by strong time-shifted viewing. Series 15 consolidated more modestly, averaging closer to 2.9 to 3.0 million.

The spin-off again lands in between, but crucially ahead of Series 15. The War Between the Land and the Sea averaged roughly 3.3 to 3.4 million on this metric, narrowing the gap with Series 14 more than many might have expected.

TV plus four screen

The clearest comparison comes from the +7 TV plus four screen figures, which better reflect modern viewing habits, as they include mobile devices.

Series 14 averaged around 3.9 to 4.0 million. Series 15 averaged closer to 3.2 to 3.3 million. The War Between the Land and the Sea averaged approximately 3.7 to 3.8 million, peaking above 4.3 million for its opening episode.

This means the spin-off consistently outperformed Doctor Who Series 15 on average, and sat much closer to Series 14 than its spin-off status might suggest.

Did downplaying Doctor Who actually help?

This is where the branding decision becomes impossible to ignore. By not foregrounding the Doctor Who association, the spin-off presented itself as a standalone drama rather than an overt franchise extension.

For viewers who felt uncertain about the current direction of the main show, or who had quietly drifted away during Series 15, this may have lowered the barrier to entry. They could engage without feeling like they were recommitting to Doctor Who itself.

If that is the case, the implication is uncomfortable. Spin-offs are meant to benefit from the strength of the parent series, not perform better when that connection is softened. The fact that a Doctor Who adjacent series appears to have averaged higher figures than the most recent full series suggests the BBC’s instincts may have worked in the short term, but it also raises serious questions about the current health of the flagship brand.

Conclusion

The data suggests that, at least for now, the wider universe is connecting with audiences more effectively than the main show itself. Whether that is a temporary blip or a sign of something more structural is a question for the future, but the numbers around The War Between the Land and the Sea make one thing clear. This spin-off did not just survive without leaning heavily on Doctor Who. It may have quietly benefited from it.