I was always going to be interested in the Millbrook Wool Luxury 1400 Pocket Mattress, now sold as the Millbrook Wool Ortho 1000 Pocket Mattress, because Millbrook tend to do that proper, traditional feel really well. A firm, hand-tufted wool and cotton top over pocket springs should feel 'together', and I wouldn't expect it to have that slouchy, sink-in vibe you get with a lot of softer hybrids. Plenty of owners describe exactly that: one wrote "Firm but not hard, very comfortable". Some disagree in both directions: a few call it nearer medium than firm, and a few find it plain hard.
The Millbrook Wool Ortho 1000 Pocket Mattress has been specifically designed to provide orthopaedic support and comfort. The listing now shows 1000 pocket springs with Hampshire fleece wool and English cotton fillings. For back sleepers, a firm pocket sprung unit like this should keep your hips nicely level, with the springs responding in smaller sections rather than the whole mattress moving at once, and a good many owners who bought it for a bad back say it did the job. On your side though, the firmness can feel a bit unforgiving around the shoulder if you're lighter in build, and one side sleeper wrote that it "felt like laying on a brick without much give". It's more of a 'sleep on' than 'sleep in' feel.
This luxurious pocket sprung mattress maintains a firm edge and orthopaedic support throughout. It features reinforced mattress edge for extra durability and is made with pocket springs support rather than the cheaper traditional spring. On paper that edge is backed by two rows of side-stitching, but owners who mention it mostly want more support there. Several say the sides compress when you sit on them, with one calling it "squashy right to the edges", while another wrote "The edges seem to hold up if you sit on them". That said, it still isn't a rock-solid perimeter like you'd get on some hotel-style open coil models, so if you perch on the side a lot, keep expectations sensible.
The design is finished with a luxurious cotton cover and wool comfort layer. The mattress is double sided with air vents for breathability. Owners rate the finish, with one writing "The finished workmanship is exceptional", and a tufted wool top over pocket springs should have that slightly springy, natural bounce rather than a slow memory foam sink. A few owners do find the tufts dig in. The wool layer gives it a drier, less clammy feel, but if you run hot, don't assume wool automatically fixes that, in a warm room it can still sleep warmer than a basic fibre top.
The mattress is handmade in the UK and comes with a 10 year warranty.
How we reviewed the Millbrook Wool Ortho 1000 Pocket Mattress
747 owner reviews analysed10+ years in the mattress industry5 reliability checksBenchmarked against 346 pocket-sprung mattresses43-point spec check688 price checks since Oct 2019
Drawing on over 10 years in the mattress industry, our team assessed the construction, materials and firmness of the Millbrook Wool Ortho 1000 Pocket Mattress from its 43-point specification in Mattress Online's listing, and benchmarked it against 346 other pocket-sprung mattresses we track. We analysed all 747 owner reviews, checking 722 written ones for sagging, heat, firmness and smell complaints. We have checked its price 688 times since October 2019. How we review
Corrections
When we get something wrong, we fix it and say so here. All corrections
- 11 October 2026
- This mattress is now sold as the Millbrook Wool Ortho 1000 Pocket Mattress. We said it contained natural latex, but the listing shows wool and cotton fillings.