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If you like the idea of a proper British-made mattress with a bit of luxury to it, the Sleepeezee Regency Kennington 4200 Pocket Sprung Mattress is well worth a look. It's a medium comfort grade mattress with a plush feel, and on paper it ticks a lot of boxes.
Design and Features
The Kent-made Sleepeezee mattress bears the coveted approval of a Royal Warrant, having won over HM The King with its quality and excellence. The rich design and thoughtful features extend their royal feel into your own bedroom, turning every night's sleep into a regal experience worthy of an English estate.
Boasting an edge support system that fortifies the mattress border, the Kennington helps reduce that annoying 'roll-off' feeling. This feature enables maximum use of your sleep surface, letting you stretch out in comfort without compromising on support. The design addresses and alleviates the problem of sagging sides - a frequent annoyance with many mattresses.
The standout feature in this mattress is its mix of tradition and modern materials, its structure houses layers of sustainably sourced bamboo and certified British wool. These layers, coupled with its ultra-supportive mini springs, provide a balanced medium comfort that offers all-round support making it ideal for both back and side sleepers. The bamboo and wool are also naturally breathable, which can help if you tend to sleep warm.
Mattress Comfort
When it comes to the comfort side of the Kennington, it's hard not to praise the combination of bamboo, British wool, and mini springs. These elements create a nice balance of comfort and support that helps this mattress stand out.
The medium comfort grade, although it might be slightly yielding for back sleepers wanting enhanced contouring, should appeal to the majority of average weight sleepers, irrespective of their sleeping positions. Its medium firmness provides a gentle support to your back, relieving pressure points, and at the same time, the mattress's plush pillow top offers a luxurious comfort that side sleepers would find particularly pleasing.
The pillow top, while providing extra softness and luxury, might not be the best choice for those who favour a firm mattress. It could introduce a bit of a sway factor, potentially compromising motion isolation, which could prove disruptive for couples.
Suitability
As for the suitability, the Kennington would be a perfect match for anyone appreciating a soothing blend of comfort, breathability, and solid build quality. It is fantastic for side sleepers and average weight individuals who are looking for a mattress that provides good overall support without being too firm. The extra pillow-top offers an added layer of plush comfort and the bamboo/wool blend also lends itself well to hot sleepers.
That said, it is quite a luxurious piece, meaning it might not fit everyone's budget. Similarly, the pillow top could be an issue for those seeking increased motion isolation. However, don't write it off just yet as it has a hundred nights of a comfort guarantee and comes with a standard 10-year manufacturer's guarantee, which shows the brand's faith in its product.
What Customers Thought
Comfort is what owners write about most, and many call it the best mattress they've slept on. One owner called it "The comfiest mattress I’ve ever slept on including in luxury hotels." Several single out the pillow top: "Its soft comfortable topper offsets the firmness of the mattress." The natural fillings come up too. One owner found the "natural materials mean it is cooler to sleep on". Another wrote that it's "so comfy and non sweaty".
Firmness is where they disagree. Dreams grades it medium. A few found it softer than that: "Very soft," wrote one owner, who at 14 stone found the edge "sinks a long way down" when sat on. More went the other way: "Firm not medium," wrote one. Several found the delivered mattress firmer than the one they lay on in the showroom, one calling it "way firmer than it was in the showroom". If you try it in store, allow for the delivered one feeling firmer than the floor model, at least at first.
Pain reports cut both ways. Plenty of owners with bad backs say it helped. One wrote that it "has helped alleviate lower back and hip pain". A smaller number say the opposite and woke with new aches: "I’m suffering pains in my shoulders and hips," wrote one who didn't believe the mattress was medium tension at all.
It's heavy to turn and to move: "Quite heavy to turn," said one. Another called it "Not a one man job!" It's deep as well, so a couple of owners had to buy deeper fitted sheets. Dips are the complaint to weigh before you buy. A few owners saw them forming where they sleep early on, one writing that "we can already see the dips where we sleep". A couple also had a first mattress replaced over poor stitching.
The Verdict
After trying this mattress in-store, it's easy to see why the Sleepeezee Kennington 4200 Pocket Sprung Mattress has become popular. Beyond the plush feel, it's a sign of the craftsmanship and attention to detail that Sleepeezee brings to their products.
Overall, the Sleepeezee Kennington 4200 Pocket Sprung Mattress offers plenty to love for hot sleepers and side sleepers. It gives you a deluxe sleeping experience, but it may not be the first choice for shoppers with budget constraints. Still, if you like the sound of it, the 100-night comfort guarantee gives you a decent window to see if it suits you at home.
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Published: 2 November 2025 · Updated: 15 March 2026
Written by
Becky Reeve , Editorial Director, Mattress Expert
Tested in store by
Ron Burns , Staff Writer and Editor · October 2025
Peer reviewed by
Ray Summer , Health Content Writer & Editor
