Replacement Sofa Bed Mattresses From £99

Product Description

Hand finished replacement sofa bed mattresses of the highest quality supplied by the UK's leading sofa bed specialist. Our mattresses are made to our specification by craftsmen in the UK - we supply 9 different grades of mattress suitable for use on the most popular sofa bed mechanisms - each one can be viewed in the image gallery above.

Our mattresses fully comply with current flammability regulation (BS 7177 / BS EN 597-1/2) and have the appropriate flammability label attached to the product. Not only is this essential if the mattress is for your own use but also if the mattress is to be used in a letting property as current law requires bedding to meet fire regulations and have the appropriate label in place.

When choosing a new mattress, the general rule is to replace 'like with like sizes', for example if your original mattresses measures 130 x 180 x 11cm, choose one of our mattresses of the same or very similar dimensions.

Approved fitment for Alstons, Gainsborough and Buoyant sofa beds plus many, many more.

The largest supplier of replacement mattresses in the UK keeping Britain comfy since 1992 !
Speak to one of our friendly specialists based at our showroom in Yorkshire !
Handmade mattresses made to our exacting specification by craftsmen at our UK production facilities
Buy with confidence, flexible returns mean if you've ordered the wrong size simply return it for a refund

Reflex Foam 7cm Sofa Bed Mattress

Our Reflex Foam replacement sofa bed mattress is the perfect upgrade for your original foam sofa bed mattress, and designed for the standard 'trampoline base' metal action sofa beds using the 'Som'toile' folding action. With a depth of 7cm, the mattress is finished in a high quality breathable damask fabric and uses a medium firmness reflex core for support.

This mattress benefits from 2 sided finishing so both sides of the mattress can be used to even out mattress wear.

Designed for 3 fold trampoline bases, this mattress folds over twice before the mechanism drops to the sofa position below the seat cushions. This mattress will fit the "Som'toile" trampoline style sofa bed mechanism.

Available in the following sizes :

: small double
115cm x 180cm x 7cm
list price £139 now £94.70


: double
130cm x 180cm x 7cm
list price £159 now £114.80


1 - 2 DAY tracked delivery

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Reflex Deluxe Foam Sofa Bed Mattress With Washable Cover - 7.5cm and 10cm Depths

With the benefit of a loose, washable zipped cover included, the Reflex Deluxe replacement sofa bed mattress offers exceptional levels of comfort for such a competitive price. We use our premium grade high density reflex foam as the core for this mattress to offer a medium level of firmness and outstanding shape retention.

The washable zip-on hypoallergenic cover features CoolMax® fabric to wick away moisture and improve airflow, keeping you cool and comfortable throughout the night. Our exclusive anti - slip fabric on the base keeps the mattress secure on your folding mechanism.

Available in 2 depths, the 7.5cm deep option is suitable for 3 fold mechanisms, typically the "Som'toile" trampoline base - this mattress folds over twice before the mechanism drops to the sofa position below the seat cushions.

The 10cm deep option is to be used on 2 fold webbed and slatted mechanisms - this style of mechanism folds the mattress over once before dropping below the seat cushions.

The practicality of the Reflex Deluxe mattress with its washable loose cover make it particularly suitable for caravan, motor home, Airbnb and guest room applications.

Supplied boxed for secure and convenient transportation.

Available in the following sizes :

: small double
115cm x 180cm x 7.5cm
list price £169 now £125.70


: double
130cm x 180cm x 7.5cm
list price £189 now £139.40


: small double
115cm x 180cm x 10cm
list price £219 now £139.70


: double
130cm x 180cm x 10cm
list price £239 now £159.40


1 - 2 DAY tracked delivery

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Ultimate Pocket Sprung Sofa Bed Mattress

Our pocket sprung sofa bed mattress we believe is the finest available in the UK today - using individually hand nested pocket springs, the mattress moulds to every contour. This type of mattress has 1088 hand nested springs (large double size) to offer supreme levels of comfort and a medium level of support. Each spring is allowed to move independently of its neighbour ensuring total support to the user.

Isolating the pocket spring units from the user are layers of natural padding, with further layers of reflex foam used to enhance the user experience. The finest quality luxury Belgian damask fabric is used to finish the mattress with a quilted border offering a truly opulent finish.

This mattress benefits from 2 sided finishing so both sides of the mattress can be used to even out mattress wear.

This mattress is designed to replace the unit found on most better quality webbed and slatted metal actions. When converting the mechanism from bed to sofa, this type of mattress folds over once, the carriage then drops to within the sofa and approx 10cm of mattress folds upwards and behind the back cushion panel. This type of mechanism is referred to as a "2 fold" sofa bed mechanism

Available in the following sizes :

: small single
80cm x 182cm x 12cm
list price £249 now £185.30


: single
93cm x 182cm x 12cm
list price £269 now £189.30


: small double
115cm x 182cm x 12cm
list price £289 now £199.80


: double
132cm x 182cm x 12cm
list price £329 now £239.80


: large double
144cm x 182cm x 12cm
list price £369 now £269.30


Selectable date delivery from stock on all double sizes

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Pocket Sprung Slimline Sofa Bed Mattress

With a depth of just 7cm, our Pocket Sprung Slimline sofa bed mattress offers the very best comfort to be used with a 3 fold Som'toile mechanism. Using a revolutionary ultra slim pocket spring unit, we have created a mattress specifically for the 3 fold mechanism offering unparalleled levels of comfort usually only found with a deeper mattress.

At the heart of our slimline mattress is the ultra slim pocket sprung core with 4 x as many springs as a traditional open coil unit. This is topped with layers of isolating fibre then finally the finest quality luxury Belgian damask breathable fabric with a quilted border to give a truly opulent finish.

In order to maintain the slim depth of the mattress, no turn technology is used so turning the mattress over is not necessary.

This mattress is designed to replace the mattress used in 3 fold actions, usually this type of mechanism has a thin 5 - 6cm foam mattress installed. We believe this is the very best mattress which can safely be installed in the 3 fold action.

Available in the following sizes :

: small double
115cm x 180cm x 7cm
list price £259 now £199.30


: double
132cm x 180cm x 7cm
list price £289 now £230.80


1 - 2 DAY tracked delivery

Click Here to Buy

Deluxe Sprung Sofa Bed Mattress

Our high quality fully sprung sofa bed mattress finished in a luxury damask fabric, is designed to replace the unit found on most better quality webbed and slatted metal action sofa bed mechanisms. Using our unique flex-comfort open coil spring unit, the mattress easily folds within the mechanism and offers excellent levels of support when in the bed position. The flex-comfort spring unit has a spring count of 288 (large double size), resulting in a mattress which offers a medium level of support. Layers of natural padding isolate the springs with further layers of reflex foam used to cushion the user.

This mattress benefits from 2 sided finishing so both sides of the mattress can be used to even out mattress wear. Available in a range of sizes from 76cm wide chair bed to 144cm wide sofa bed.

When converting the mechanism from bed to sofa, this type of mattress folds over once, the carriage then drops to within the sofa and approx 10cm of mattress folds upwards and behind the back cushion panel. This type of mechanism is referred to as a "2 fold" sofa bed mechanism.

Available in the following sizes :

: small single
76cm x 182cm x 11cm
list price £179 now £145.10


: single
90cm x 182cm x 11cm
list price £199 now £149.10


: small double
115cm x 182cm x 12cm
list price £209 now £159.60


: double
132cm x 182cm x 12cm
list price £249 now £169.70


: large double
144cm x 182cm x 12cm
list price £289 now £189.10


Selectable date delivery from stock on all double sizes

Click Here to Buy

Memory Foam Sofa Bed Mattress

This mattress offers supreme levels of comfort for those looking for a firmer visco elastic memory foam mattress. As well as offering an incredibly comfortable bed, this firm mattress offers excellent support for your seat cushions when the bed is folded away for sofa use.

Memory foam is heat sensitive and moulds closely to the contours of the body offering the user undisturbed sleep. 25mm of superb high density 50kg specification memory foam is supported on 75mm of high density reflex foam core to give a total depth of 100mm / 10cm.

The mattress is finished in a high quality damask breathable fabric to keep the user comfortable, featuring a luxurious diamond quilted panel to the sleeping surface and sides. This mattress features no turn technology so does not require flipping over, however we do recommend turning end to end to even out mattress wear.

This mattress is designed to replace the unit found on most better quality webbed and slatted 2 fold metal actions. When converting the mechanism from bed to sofa, this type of mattress folds over once, the carriage then drops to within the sofa and approx 10cm of mattress folds upwards and behind the back cushion panel. This type of mechanism is referred to as a "2 fold" sofa bed mechanism

Available in the following sizes :

: small single
76cm x 180cm x 10cm
list price £219 now £145.10


: single
90cm x 180cm x 10cm
list price £229 now £159.10


: small double
115cm x 180cm x 10cm
now with washable zipped cover
list price £249 now £174.60


: double
132cm x 180cm x 10cm
list price £279 now £194.60


: large double
142cm x 180cm x 10cm
list price £319 now £229.10


1 - 2 DAY tracked delivery

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Memory Foam Slimline Sofa Bed Mattress

With the benefit of a loose, zipped washable cover, this version of our popular visco elastic memory foam mattress is designed to be used on 3 fold mechanisms which have a 5 - 7cm deep mattress including selected Habitat, Ikea, Marks and Spencer sofa beds including many others.

Using our superb quality 50kg density memory foam bonded to a supportive reflex foam core, the mattress offers a softer surface texture but with excellent support to give superior levels of comfort for such a slim mattress.

The washable zip-on hypoallergenic cover features CoolMax® fabric to wick away moisture and improve airflow, keeping you cool and comfortable throughout the night. Our exclusive anti - slip fabric on the base keeps the mattress secure on your folding mechanism. This mattress features no turn technology so does not require flipping over, however we do recommend turning end to end to even out mattress wear.

Designed for 3 fold trampoline bases, this is the highest quality memory foam mattress we can supply for this style of mechanism, the mattress folds over twice before the mechanism drops to the sofa position below the seat cushions. Generally this mattress will fit mechanisms marked with "Som'toile" and support the mattress with a black fabric and springs around the edge of the base.

please note the 76cm option has a fixed non washable damask cover

Available in the following sizes :

: small single
76cm x 180cm x 7cm
list price £159 now £119.70


: small double
115cm x 180cm x 7.5cm
list price £179 now £134.20


: double
130cm x 180cm x 7.5cm
list price £209 now £149.40


: large double
142cm x 180cm x 7.5cm
list price £249 now £159.70


1 - 2 DAY tracked delivery

Click Here to Buy

Memory Foam Extra Long Sofa Bed Mattress

This high quality memory foam sofa bed mattress is designed for "roll out" mechanisms which require a slightly longer mattress than usual. 195cm in length, this replaces the mattress used in many European roll out mechanisms, including sofa beds produced by Lampolet, Jay-be, DFS, Natuzzi, Slumberland, Gainsborough and more. The roll out mechanism requires the user to pull the back cushions forward as the bed is unfolded in one action - when in the bed position, the back cushions are usually positioned beneath the foot end of the bed without being detached from the mechanism.

The memory foam is heat sensitive and moulds closely to the contours of the body offering the user undisturbed sleep. 25mm of superb high density 50kg specification memory foam is supported on 75mm of high density firm reflex foam core to give a total depth of 100mm / 10cm.

The mattress is finished in a high quality damask breathable fabric to keep the user comfortable, featuring a luxurious diamond quilted panel to the sleeping surface and sides. This mattress features no turn technology so does not require flipping over, however we do recommend turning end to end to even out mattress wear.

Available in the following sizes :

: small double
115cm x 195cm x 10cm
list price £299 now £249.30


: large double
142cm x 195cm x 10cm
list price £369 now £299.70


Selectable date delivery from stock

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Hotel Contract Grade CRIB 5 Mattresses

crib 5 hotel sofa bed mattress
Our mattresses fully comply with the domestic flammability test to BS 7177, however for contract use in hotels, guest houses etc. the legal requirement is for the mattress to conform with CRIB 5 level of enhanced fire protection. Our deluxe sprung mattress range is the only mattress which can be upgraded.

Take a look at our hotel grade sofa bed mattress by clicking here

Available in the following sizes :

: small double
115cm x 182cm x 12cm
list price £229 now £179


: double
132cm x 182cm x 12cm
list price £269 now £199


Selectable date delivery from stock

Click Here to Buy

Important Measuring Information

Before ordering, please measure your existing mattress to ensure you select the correct size for your frame, also realise that 2 fold (thicker) mattresses will not fit into a 3 fold metal action ! If unsure, please telephone us for our advice before ordering. Please note that due to manufacturing tolerances, allowance should be made for the actual dimensions of mattress supplied which will be within 2cm.

Mattress Care

We hope you will be delighted with your new sofa bed mattress which should offer excellent service for years to come. All of our sprung mattresses are 2 sided so the mattress can be turned end to end and flipped over periodically to ensure even wear of the fillings within the mattress. During the first few months, a characteristic known as mattress settlement will occur - the fillings will compress where the user's weight is greatest, usually in the centre of the mattress. This is entirely normal and not a fault of the mattress - an explanation of mattress settlement can be read in this excellent Bed Federation article (click here to read).

Our memory foam mattresses are 1 sided and do not require flipping over, however as with the sprung mattresses rotating end to end is recommended on a regular basis.

4.8
4.8 based on 80 reviews
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Page 1

Name: Lewis Location: Hull

Date: October 2025 Rating:

Comments : Local customer so phoned to arrange a visit. They have a massive range of mattresses to choose from to suit all budgets. Opted for the foam one with the washable cover, boxed so easy to take away in our car. Very comfy !

Name: Joules Location: Whitton

Date: August 2025 Rating:

Comments : Very efficient. Ordered new mattress for Sofabed late on Monday and was delivered at 8.30am Wednesday. Perfect and comfy replacement mattress.

Name: Martin Location: Alfreton

Date: August 2025 Rating:

Comments : Easy to use website, simple ordering process and super fast hassle free delivery of quality mattress that looks and feels the business. Highly recommend.

Name: Michael Location: London

Date: August 2025 Rating:

Comments : Nice company to do business with. I needed an extra long sofa bed mattress. The memory foam mattress is good quality. The company also allowed the choice of delivery days and was delivered without hassle.

Name: Margaret Spencer Location: Greenford

Date: July 2025 Rating:

Comments: Received new mattress, delivery perfect. Have used this Company before. Mattress brilliant !

Name : Jane Location : Bilston

Date: June 2025 Rating:

Comments : Needed to replace my 3 year old Sofabed mattress, because I use it every night obviously they dont last as long as a guest sofabed, this mattress is excellent, my original mattress caused a dome in the middle when folded in half causing my sofa to be quite uncomfortable when sat on, this mattress folds flat, I cant believe the difference it has made, my sofa is now soft and comfortable to sit on, ordering on line was so easy and delivery on time, highly recommend sofabedgallery.

Name : Cath Location : Isle Of Wight

Date: June 2025 Rating:

Comments : I needed a replacement sofa bed mattress delivered to the Isle of Wight in a hurry, because we were going away. The delivery price to the Island was published up front (a rarity and greatly appreciated) and on contacting the company, they arranged 48 hour delivery so it was here in plenty of time. Great mattress and great customer service.

Name : Helena Location : Glasgow

Date: May 2025 Rating:

Comments : I purchased the ultimate pocket sprung sofa bed mattress and I am very happy with the product. It fits perfectly and is very comfy. I found it easy to order and the delivery service was great as I received it the next day. I would highly recommend this company

Name : Laup Location : UK

Date: May 2025 Rating:

Comments : All went well. Delivery on time. Mattress fits perfectly. No problems

Name : Tracey Location : Shipdham

Date: April 2025 Rating:

Comments : Mattress delivered within 48 hours of ordering by courier in agreed time slot. Comfortable well made mattress, slightly smaller than our original but otherwise happy with purchase.

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Our double size delux sprung and ultimate pocket sprung mattresses enjoy selectable date delivery - the date picker will show after you have selected the mattress option.

Delivery time for all other options is 1 - 2 DAY tracked delivery (working days)- we will email you information after processing your order so you can track your delivery.

If your chosen mattress is not in stock it will be marked pre order with delivery @ 4 weeks - we will contact you when the item is available for delivery.



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