The best mattress isn't the one with the highest spring count or the longest list of features — it's the one that suits how you actually sleep. A side sleeper needs something a firm-back sleeper would hate. At Bonanza Sleep we make and supply mattresses across the UK, from pocket sprung and memory foam through to orthopaedic designs, in every size from single to 6ft super king, with free delivery nationwide.
We've been making beds and mattresses here for years, and we'd rather ask two questions about your sleeping position than sell you the most expensive thing on the page. This guide walks through the choice properly, then you can browse the range above and order with a bit more confidence.
Three things decide it: how you sleep, how much you weigh, and whether you share the bed. Everything else is detail.
Side sleepers need to give at the shoulder and hip. Too firm and you'll wake with a dead arm and a sore hip. Medium to medium-soft usually wins.
Back sleepers want support through the lower back with just enough cushioning. Medium-firm is the safe middle ground.
Front sleepers need firmer support, otherwise the hips sink and the lower back arches all night.
Restless sleepers who change position constantly do best on a responsive pocket sprung mattress rather than deep memory foam.
A mattress that feels medium to someone of 10 stone feels soft to someone of 16. Heavier sleepers generally want a higher spring count and a firmer feel; lighter sleepers often find a very firm mattress uncomfortable because they never sink into the comfort layer at all.
If one of you gets up early or turns over constantly, pocket springs are the answer. Each spring is wrapped and moves on its own, so movement doesn't travel across the bed the way it does on an open coil.
Individually wrapped springs that respond independently to your body rather than moving as one unit. They breathe well, so they sleep cooler than solid foam, and they suit couples and combination sleepers particularly well.
Our Kingston 3000 Pocket Mattress carries 3,000 springs with a soft-touch surface, while the Canterbury 2000 Pocket Pillow Topper adds a padded topper for a plusher feel. Spring count isn't everything — construction and comfort layers matter just as much — but more springs generally means more targeted support, especially in a king or super king.
An orthopaedic mattress uses a firmer support core to keep the spine in line, which many people with back or joint discomfort find more comfortable. Our Superb Orthopaedic Mattress pairs that firmer core with a softer top layer, so you get the support without lying on something that feels like a board.
Worth saying plainly: a mattress is not medical treatment. If back pain wakes you regularly or persists, please speak to your GP or a physiotherapist. What we can do is give you a supportive surface, and a good number of our customers tell us it's helped.
Memory foam moulds to your shape and holds it, which suits people who like a "hugged" feel and want pressure relief at the hips and shoulders. Hybrids put a foam comfort layer over a pocket spring core, which gives you contouring and airflow together — a sensible middle ground if you can't decide.
Most people leave it far too long. Some honest signs:
You wake stiff or achy and it eases within an hour of getting up
There's a visible dip where you sleep, or a ridge down the middle
You sleep better in hotels or at other people's houses
You feel every movement your partner makes
It's over seven or eight years old — even good mattresses lose support
Your allergies have worsened overnight, which often points to dust and moisture build-up
You've bought a new bed frame or divan and put a tired mattress on it, which wastes half the benefit
We manufacture beds in our West Yorkshire workshop and supply mattresses built to British standards. Nothing sits on a container for six weeks before it reaches you.
Delivery is free, orders typically arrive within a few working days, and we ring 24–48 hours ahead so you know when to expect the van. Our delivery team will take it to the room you want it in.
Single 3ft, small double 4ft, double 4'6", king 5ft and super king 6ft — all cut to standard British dimensions, so they fit our bed frames and divans exactly and any other standard UK bed too.
Order your mattress alongside a bed frame, divan or ottoman base and it all arrives on one delivery, properly matched. It saves a second delivery slot and the measuring worry.
We sell direct, so there's no middleman margin on the price. Pay by card or PayPal, or spread the cost with Klarna or Clearpay.
Our beds and mattresses carry a three-year warranty against manufacturing faults, and we hold 4.6 out of 5 across our reviews. Comfort and quick delivery come up again and again — one customer specifically mentioned our 2,000 pocket sprung as the best sleep they'd had in years.
There's no shortage of cheap mattresses UK shoppers can order in two clicks for under a hundred pounds. We understand the appeal, and we'd still steer you away from the very bottom of the market — here's why.
Thin comfort layers collapse fast. Budget mattresses often use a couple of centimetres of low-density foam over an open coil unit. It feels fine in month one and dips by month eight.
Open coil moves as one piece. Every time your partner turns over, you'll know about it.
Depth tells you a lot. A properly built mattress has enough depth to hold real support and comfort layers. Very shallow mattresses simply haven't got room for both.
You'll buy twice. A mattress that lasts three years instead of eight isn't cheap, whatever the sticker said.
We sit deliberately in the middle: properly built pocket sprung, orthopaedic and memory foam mattresses at prices that don't assume you've got a thousand pounds spare. That's the balance we've aimed for since we started, and it's why customers come back for a second bed.
Have a look through the collection above and filter by size and type — every mattress for sale here is built to standard UK dimensions and covered by our warranty. If you're torn between firmnesses, tell us your sleeping position, rough weight and whether you share the bed, and we'll tell you which is the best mattress for you — no upselling, and we'll happily point you at a cheaper model if it's the right one.
If you'd rather buy a mattress online in the UK without second-guessing yourself, message us on WhatsApp, ring us, or come and lie on a few at our showroom on High Street in Heckmondwike, West Yorkshire. Ten minutes on the actual mattress tells you more than any description will.
Choose your size, pick your comfort level, and we'll get it out to you free delivery, three-year warranty, made for British beds.
Bed frames - upholstered, wingback and chesterfield designs
Divan beds - supportive bases with two or four drawers
Ottoman beds - full gas-lift storage under the whole bed
TV beds - built-in screen lift in the footboard
Kids' beds - sturdy beds built for children's rooms
Most people with back discomfort do better on a medium-firm or orthopaedic mattress, which supports the lower back without letting the hips sink. Very soft mattresses tend to make it worse. If pain is persistent or wakes you regularly, see your GP or a physiotherapist as well — a mattress supports good sleep, but it isn't a treatment.
Pocket sprung mattresses use individually wrapped springs that respond independently, so they feel responsive and sleep cooler. Memory foam moulds to your shape and holds it, giving a closer, hugged feel. Hybrids combine both. Side sleepers often prefer foam; couples and hot sleepers usually prefer springs.
Not on its own. Spring count matters, but so do spring quality, comfort layers and how the mattress is finished. As a rough guide, 1,000–2,000 springs suits most sleepers, and 2,000-plus adds finer contouring — particularly worthwhile in a king or super king where the springs spread over more area.
An orthopaedic mattress has a firmer support core designed to keep the spine aligned. Ours pair that firmer core with a softer top layer, so you get proper support without an uncomfortably hard surface. They suit front sleepers, heavier sleepers and anyone who prefers a firmer feel.
Single 3ft, small double 4ft, double 4'6", king 5ft and super king 6ft, all in standard UK dimensions. They fit our bed frames and divans and any other standard British bed.
Delivery is free across the UK mainland and orders usually arrive within a few working days. We call 24–48 hours ahead to confirm the day and time window.
Yes, and it's the simplest way to do it. Order the mattress with a bed frame, divan or ottoman base and everything arrives together, sized to match.
Around every seven to eight years for most people. Sooner if you can see a dip, feel the springs, or consistently wake up more tired than when you went to bed.
Rotate it head to foot every few months — and turn it over too if it's double-sided. Use a washable protector, air the bed for a few minutes before making it, and keep it on a supportive base, since a sagging slatted frame will ruin a good mattress.
Get in touch and our team will talk you through the options. Full terms are on our Delivery & Returns page. If you're unsure before ordering, message us first we'd far rather recommend the right one than process a return.
