Posted by Chris Ailey
on September 06, 2026
A good mattress is the quietest luxury in the house. You never see it, but you feel it every morning. Millbrook Beds have been handmaking mattresses in Hampshire for more than seventy years, and their Serenity collection is where that craft is easiest to appreciate: pocket springs counted in their thousands, natural fibres instead of foam and chemicals, and a finish that feels calm rather than showy. This guide walks through the full Serenity range, explains what the numbers actually mean, and helps you settle on the right one for how you sleep.
Quick answer: which Millbrook Serenity mattress should you choose?
If you want dependable, breathable support at a gentle price, start with the Serenity 1020. For the balance most people are looking for, the Serenity 2500 adds a layer of responsive micro springs for a more cushioned feel. If you want a genuinely indulgent, hotel-grade night, the Serenity Luxury 4750 and the flagship Serenity Luxury 6500 layer thousands of micro springs beneath silk and cashgora. As a rule, the higher the spring count, the deeper and more cushioned the feel, so choose by comfort preference and budget rather than assuming more is always better.
Who are Millbrook Beds?
Millbrook Beds are a family-run British manufacturer who have been building mattresses by hand in Hampshire since 1946. What sets them apart is the commitment to natural materials and traditional methods: individually pocketed springs, traceable Hampshire wool, English-spun cotton, and, higher up the range, silk and rare cashgora. There is no reliance on cheap foam or chemical treatments, which is part of why these mattresses breathe so well and tend to feel fresh year after year. Every Serenity mattress is handmade to order in England, hand side-stitched at the edges, and finished in a chemical-free cover.
How the Serenity range is built
The Serenity collection is organised, more or less, by spring count. Millbrook combine full-size pocket springs with their own Comfonomic micro springs, and the more micro springs a mattress has, the more precisely it responds to the shape of your body and the more cushioned it feels. Understanding that one idea makes the whole range easy to read.
- Full-size pocket springs provide the core support that holds your spine in a natural line.
- Comfonomic micro springs sit above them and react to smaller movements, easing pressure at the hips and shoulders for a softer, more contouring feel.
- Smooth-Tech tuft-free surface removes the traditional buttoned dimples, so the sleeping surface feels even and uninterrupted.
- Natural fibre layers such as wool, cotton, silk and cashgora regulate temperature and wick away moisture, which keeps the bed comfortable across the seasons.
All the larger Serenity models are non-turn, meaning you never have to flip them. An occasional head-to-toe rotation is all they ask.
The Millbrook Serenity mattresses, one by one
Mini Millbrook 1000, from £369
A perfectly sized single with 1,000 hand-nested pocket springs, filled with traceable Hampshire wool, English cotton and recycled fibres. Breathable, hypoallergenic and easy to care for, it is ideal for children's rooms and smaller bedrooms where you still want proper craftsmanship. Best for: children, single rooms and guest beds.
Serenity 1020, from £449
The natural starting point in the range. With 1,020 full-size pocket springs, a Smooth-Tech tuft-free top and breathable wool and cotton layers, it offers steady, responsive support at a 28cm depth. No micro springs here, so the feel is clean and classic rather than deeply cushioned. Best for: anyone who wants dependable, breathable support without extra plushness.
Serenity 2500, from £599
The 2500 introduces Millbrook's Comfonomic micro springs: 1,000 full-size springs paired with 1,500 responsive micro springs, layered with cotton, wool and a touch of silk beneath a 29cm tuft-free surface. This is where the range starts to feel personalised, moving with you rather than simply holding you up. Best for: sleepers who want that "just right" balance of support and give.
Serenity Luxury 2750, from £799
A more indulgent step up, with 2,750 springs including 1,750 Comfonomic micro springs and silk added alongside the wool and cotton. At 31cm deep it delivers the fuller, more substantial feel many people associate with a luxury bed. Best for: those who want a richer, more cushioned finish without moving to the very top of the collection.
Serenity 4500, from £699
Built for balance, the 4500 combines 1,000 full-size springs with 3,500 Comfonomic micro springs, natural wool, cotton, silk and cashgora, and the Millbrook Ultra Edge support system for confidence right to the sides. At 30cm deep and non-turn, it eases pressure points while staying beautifully consistent. Best for: couples and anyone wanting lift, softness and stability together.
Serenity Luxury 4750, from £775
A close sibling to the 4500 with the same 1,000 plus 3,500 micro-spring architecture, hand side-stitched edges and a plush blend of English cotton, Hampshire wool, silk and rare cashgora beneath a Smooth-Tech finish. The pressure relief is intelligent and precise, wrapped in a chemical-free, supremely soft cover. Best for: sleepers who want genuine luxury and refined temperature regulation.
Serenity Luxury 6500, from £985
The flagship. 1,000 full-size pocket springs sit beneath an extraordinary 5,500 Comfonomic micro springs, layered with natural wool, cotton, silk and cashgora and finished with the Ultra Edge support system. At 34cm deep with a tuft-free, non-turn design, it represents the height of Millbrook's handcrafted comfort. Best for: anyone who wants the most cushioned, hotel-grade night in the range.
How to choose: firmness, size and depth
Tension and firmness
Most Serenity mattresses come in medium or firm tension. As a general guide, lighter sleepers and side sleepers tend to prefer medium, which lets the shoulders and hips settle in, while heavier sleepers and those who sleep on their back or front often prefer firm for a little more lift. If two of you share a bed, choose for the heavier partner and let the micro springs do the fine-tuning.
Size
The Serenity mattresses are available from single through to super king, with the exception of the Mini 1000, which is a single. If you have the floor space, sizing up is one of the simplest ways to sleep better, especially for couples.
Depth
Depth ranges from 28cm on the Serenity 1020 to 34cm on the 6500. A deeper mattress generally feels more cushioned, but do check your bed frame and buy deep fitted sheets to match. Our mattress guide covers sizing and sheet depth in more detail.
What makes a Millbrook mattress different
Three things, really. First, the Comfonomic micro springs, which give the higher models their precise, contouring feel without foam. Second, the natural fibre fillings, which breathe and regulate temperature in a way synthetic layers rarely match. And third, the fact that each one is handmade to order in England and hand side-stitched, so the structure lasts. If you care about how a bed is made as much as how it feels, this is a range that rewards the attention. Once your mattress is chosen, a breathable topper or protector can extend its life further, and our guide to caring for luxury bedding covers keeping the rest of your bed fresh.
Explore the Serenity range
Frequently asked questions
Are Millbrook mattresses any good?
Millbrook are a long-established British manufacturer who handmake their mattresses in Hampshire using pocket springs and natural fibres rather than foam. The Serenity range is well regarded for breathable, supportive comfort and durable, hand-finished construction. As with any mattress, the "best" one is the model whose feel and firmness suit you.
What is the difference between the Serenity models?
Mainly spring count and fillings. The entry models use full-size pocket springs for clean, classic support, while the higher models add thousands of Comfonomic micro springs and richer layers of silk and cashgora for a deeper, more cushioned and more temperature-regulating feel.
What are Comfonomic micro springs?
They are smaller springs layered above the main pocket springs. Because there are so many and they react independently, they contour to the body and ease pressure at the hips and shoulders, giving the higher Serenity mattresses their responsive, cushioned character.
Do Millbrook mattresses need turning?
The larger Serenity mattresses are non-turn, so you never flip them. An occasional head-to-toe rotation helps them wear evenly. The Mini 1000 is a single-sided, easy-care mattress that simply needs rotating from time to time.
Should I choose medium or firm?
Side sleepers and lighter people often prefer medium, which lets the shoulders and hips settle. Back and front sleepers, and heavier people, often prefer firm for extra lift. If you share a bed, choose for the heavier partner and let the comfort layers do the rest.
