The Airsprung Group connection
Airsprung Group had over a century of UK mattress manufacturing behind it, and Gainsborough was the brand that carried the group's premium heritage work. The practical benefit for buyers was that manufacturing scale behind the scenes kept costs more controlled than a tiny independent maker could manage, while the handcrafted construction and natural fibre fillings delivered quality the mass-market Airsprung label didn't offer. Whether that split matters to you depends on how much you care about who owned the factory. Most people, rightly, care what's inside the mattress.
The Gainsborough range
Only two Mayfair models are still listed, the 1000 Ultra Firm and the 5000, but the wider range shows what the brand was about. Edge support is the first thing I'd have checked on a Mayfair 3000. On paper it should hold better than you'd expect at the price, probably because the hand side-stitching gives the borders more structural integrity than machine-stitched alternatives. Underneath that, three thousand pocket springs with natural cotton and wool fillings. I'd expect a medium-firm feel with a quick response from a build like that, not the slow foam sinking you get on hybrid builds.
The Mayfair 7000 pushes the spec substantially. Seven thousand springs in a king is a marketing number to me; above about fifteen hundred the count stops meaning much and the extras are usually minis. The filling stack, silk alongside the wool, cotton and cashmere, is the part I'd pay for. This is where Gainsborough competes directly with the likes of Millbrook, the lower end of Vispring, and the premium Harrison Spinks builds. The Mayfair 5000 listing shows how Gainsborough reached its bigger counts: 1000 traditional pocket springs with 4000 mini springs in the comfort layers. If the 7000 follows the same pattern, the difference you'd feel is the thicker natural comfort layers, not the spring count. Whether the step-up in price is worth it comes down to the fillings, not the number on the label.
Natural fillings feature across most of the range. Mohair, cashmere, merino wool, silk, cotton, and traditional horsehair in some configurations. No memory foam, no gel infusions, no graphite. If you want modern comfort tech, Gainsborough isn't offering it.
The practical catches
No handles on some models, and turnable Gainsborough mattresses are heavy. Flipping a deep natural-fibre pocket sprung mattress without handles is a two-person job, and if you live alone or have mobility issues it's a real consideration before buying. Turnable designs last longer if you actually flip and rotate them, but that advantage disappears if you physically can't manage it.
Mattress Online's listings for the remaining stock still show a 10 year guarantee. With the maker in administration since May 2026, ask Mattress Online who stands behind it before you buy. Ten years was not as long as some D2C brands offer, but it was consistent with what Hypnos, Harrison Spinks and Millbrook provide at similar price tiers.
Who Gainsborough suits
Buyers who specifically want traditional British handcrafted pocket spring construction with natural fillings rather than foam-dominant alternatives. Most of the range is built around this proposition.
Heavier sleepers who want a firm, deep natural-fibre build. The 7000's thicker comfort layers are the part that earns the extra money for a heavier body, not its spring count.
Buyers happy to order unseen. The remaining stock is online at Mattress Online, so read its exchange terms before you buy, because you won't be lying on one first.
Who probably shouldn't
Buyers who want modern foam hybrid feel. Zero memory foam in the range. If you've tried Simba, Emma or Nectar and liked the bounce-back foam contouring, Gainsborough will feel completely different.
Lighter side sleepers who need deep pressure relief at the shoulder. Natural fibre comfort layers are firmer than foam at the surface level, and a light side sleeper will feel that at the shoulder.
Anyone who needs a long no-strings trial. Independent retailer trial policies vary and are generally shorter than those offered by D2C brands. Check your specific retailer's terms before committing.
Verdict
Gainsborough was a proper British heritage mattress maker that didn't chase the D2C market. Of the two models still listed, the Mayfair 5000 is the one I'd look at first for its medium feel and natural fillings, the 1000 Ultra Firm only if you want a very firm bed, and the natural filling commitment gives the brand a clear identity in a market crowded with foam alternatives. If you want this kind of bed and miss the last of the stock, Hypnos, Millbrook and Harrison Spinks make the same sort of thing, and Hypnos is fair for the money.
