
Things have changed a lot in the independent author print sector in the past year – not least because when we last looked at these sales at this point in 2025, the Coco Wyo colouring books were self-published, but the brand’s new releases have subsequently been snapped up by Penguin Random House (PRH) Children’s.
One thing that has not changed, though, is the trickiness in identifying the self-published authors in NielsenIQ BookData’s Total Consumer Market (TCM). For this analysis, we have identified the biggest authors from the “Other Publisher Groups” in both 2025 and 2026 who are self-published, then combined these with any title that has an imprint that identifies itself as independently published, in addition to those from Ingram Spark and CreateSpace.
This process revealed 2,452 titles in the TCM across the first six weeks of 2025, which delivered sales worth £3m, though it is worth pointing out that Coco Wyo was responsible for £815,074 of that. For 2026, the number of titles rises to 2,541, turning in a total of just under £2m. Some of this does still belong to Coco Wyo as their old editions continue to sell, but in 2026 it has been worth just £65,347.
Stripping out the Vietnamese colouring collective, the value is down 14.5%, but they are not the only independent authors to have moved over to the traditional publishing space in the past year. The third-biggest author in 2025 was Vivi Tinta – responsible for another range of colouring books and £157,120 in the first few weeks of the year. Like Coco Wyo, it has since been acquired by PRH and sales of its self-published offerings have plummeted to just under £2,000.
The absence of colouring books in the data means that Northumberland-based thriller writer LJ Ross not only tops the Self-Published Top 50 with 2025’s Belsay – the latest in the DCI Ryan series – but she is also the biggest author on the list, having shifted £104,515 worth of her books in the first six weeks of 2026.
Still, even Ross is not immune to PRH’s charms. In the middle of 2025, the trade group’s Century division acquired the rights to 37 of Ross’ backlist titles, as well as 12 frontlist titles yet to be published. It means that just looking at Ross’ own Dark Skies hybrid imprint, the thriller writer’s TCM takings are down 36.4%. The deal was undoubtedly a canny move, however, as overall sales for Ross – helped by a mass rejacketing of her books – have totalled £197,851, up 20.3%.
What this all adds up to is that the decline across self-published titles can be covered by 2025’s best three authors; excluding them, sales across the remaining titles are up 4.8%. Perhaps this means that the next bestselling authors on the list ought to look out for offers from a big publishing house in 2026. It may be just the break that 2026’s third-biggest self-published author – just behind LJ Ross and Coco Wyo – Freida McFadden needs.
The Housemaid’s Wedding – a short story that bridges the gap between the second and third book in the Housemaid series – helped take McFadden’s self-published sales up to £62,320, an increase of 55.7% compared with the same period in 2025. Or rather, her sales have grown in spite of it – though it is her biggest title on this list, The Housemaid’s Wedding’s sales are down 19.7%.
It is other titles such as The Widow’s Husband’s Secret Lie and The Wife Upstairs that have experienced big increases, leading to McFadden dominating the self-published chart so far in 2026 – much as she dominates all the other charts – with eight titles, three more than Ross.
So far we have learned that in order to top the TCM self-published chart in 2026, it helps to be traditionally published too – or have a movie released. It is Robin Bennett-Freebairn who bucks that trend: three of his What a Year to Be Born books (1946, 1956 and 1966) appear in this Top 50 and have notched up sales of £33,021 so far in 2026.
Self-Published Titles
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Source: NielsenIQ BookData, Weeks 1-6 2026