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Double Firm Spare Room Mattresses

Double size is designed to accommodate two people comfortably. Measured in metric units, a standard double bed and mattress are 135cm wide and 190cm long. Converted to imperial units, this equates to 4 feet 6 inches wide and 6 feet 3 inches long. This is the most common and widely available size for all bed types in the UK.


A firm mattress is a firmness that offers very little give or sink, providing a very supportive sleeping surface and distributing your body weight more evenly than softer mattresses. Firm mattresses are perfect for front and back sleepers.

Ideal for infrequent use in areas like spare rooms which are not used as the primary sleeping space.


Sleep in total comfort with one of our luxury mattresses, hand picked to create a diverse range of comfort and support options from the very best manufacturers in the UK including Silentnight, Sleepeezee, Relyon and Giltedge.

With up to 60% off RRP and extra offers including free pillows this is the perfect time to upgrade your existing mattress and with 1000s in stock you can have it delivered next day with convenient time slots availavble and have your old mattress taken away at the same time!

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  1. Size
    Double
  2. Comfort Rating
    Firm
  3. Features
    Spare Room
Price
Size

Single

3'(90cm) x 6'3"(190cm)

Small Double

4'(120cm) x 6'3"(190cm)

Double

4'6"(135cm) x 6'3"(190cm)

Kingsize

5'(150cm) x 6'6"(200cm)

Super Kingsize

6'(180cm) x 6'6"(200cm)
Comfort Rating
  1. tension-image

    Soft/Med

    Balances comfort and support, providing a soft feel Ideal for sleepers with a lighter build who may find a medium mattress too firm and want a little extra give.

  2. tension-image

    Medium

    Often considered a universal comfort option, suitable for most people regardless of weight, sleeping position or preference.
  3. tension-image

    Med/Firm

    Provides a slight firmness, perfect if you want the extra support but still like your bed to feel cosy and soft.
  4. tension-image

    Firm

    Offers very little give or sink, providing an exceptionally supportive sleeping surface and ideal for people who like to sleep on top of their mattress
Mattress Type

  1. Pocket Springs

    Pocket springs work independently to each other, providing more support and reducing motion transfer.

  2. Natural Fillings

    Natural fillings in mattresses are materials derived from natural sources that add comfort, support, and durability to a mattress.

  3. Miracoil Springs

    Miracoil springs provide targeted support and enhanced comfort for sleepers.

  4. Comfort Fillings
Features

  1. Foam Encapsulated

    Foam encapsulated refers to a type of mattress construction where a layer of foam is used to encase the springs or support core of the mattress.

  2. Mattress Handles

    The primary purpose of mattress handles is to provide a convenient way to move or adjust the mattress, especially when rotating or flipping the mattress.

  3. Cooler Sleepers

    "Cooler sleepers" refers to people who feel hot or warm and prefer a cooler sleeping environment.

  4. Award Winning

    Awards for beds and mattresses include Consumer Reports, Good Housekeeping, and the International Sleep Products Association.

  5. Vacuum Packed

    A vacuum packed mattress, also known as a bed-in-a-box, is a type of mattress that is compressed, vacuum-sealed and rolled into a compact box for shipping and delivery.

  6. Warmer Sleeper

    "Warmer sleepers" refers to people who feel cold and prefer a warmer sleeping environment.

  7. Anti-Allergy

    An anti-allergy mattress is designed to help reduce the likelihood of an allergic reaction to dust mites, pet dander, and other common allergens that can accumulate in bedding.

  8. Hybrid

    A hybrid mattress is a type of mattress that combines elements of both springs and foam.

  9. Pressure Relieving

    Pressure-relieving mattresses are designed to distribute the body's weight more evenly across the surface of the mattress, reducing pressure on specific points such as the hips, shoulders, and spine.

  10. Spare Room

    ideal for infrequent use in areas like spare rooms which are not used as the primary sleeping space.

  11. Minimise Disturbance

    Mattresses designed to minimize partner disturbance. Ideal if you or your partner are light sleepers or have different sleep preferences.

  12. For A Heavier Person

    Durable, supportive mattresses that can support heavier weight.
Promotions

  1. Free Pillows

    1 item

  2. Half Price Offers

    2 items
Delivery

  1. Next Day Delivery

    Next day delivery or later. Choose a delivery date at checkout
Mattress Depth Range

  1. 20cm-24cm

    3 items

  2. 25cm-29cm

    2 items
Pocket Spring Range

  1. 1001 - 1800

    2 items
Brand

  1. Silentnight

    Silentnight beds and mattresses with up to 50% off RRP

  2. Sleepeezee

    Sleepeezee beds and mattresses, including Jessica, hybrid and wool collections. Now with up to 50% Off.

Guarantee

  1. 5 Year

    4 items

  2. 10 Year

    1 item
Rating

  1. 5

    Super kingsize beds and mattresses are the largest UK standard size, providing ample space for two sleeping adults.

    1 item

  2. 4
    & up

    Suitable for both children and adults. A single bed and mattress measure 90cm wide and 190cm long.

    4 items
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  1. Sleepeezee Backcare Luxury 1400 Mattress
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    tension

    Firm

    Mattress Type:

    Pocket Springs

    1400 Pocket Springs

    Natural Fillings

    Natural Fillings

    Sleepeezee Backcare Luxury 1400 Mattress

    brand
    Rating:
    95%
    34  Reviews
    Special Price £549 .00 Regular Price £1,099.00
    May Sale
    Save £420.00
    free-delivery

    Free delivery from Thursday 16th May

  2. Silentnight Miracoil Ortho Mattress
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    tension

    Firm

    Mattress Type:

    Miracoil Springs

    Miracoil Springs

    Comfort Fillings

    Comfort Fillings

    Silentnight Miracoil Ortho Mattress

    brand
    Rating:
    94%
    38  Reviews
    Special Price £289 .00 Regular Price £579.00
    May Sale
    Save £220.00
    free-delivery

    delivery from Thursday 16th May

  3. Silentnight Star Indulge Mattress
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    tension

    Firm

    Mattress Type:

    Miracoil Springs

    Miracoil Springs

    Comfort Fillings

    Comfort Fillings

    Silentnight Star Indulge Mattress

    brand
    Rating:
    95%
    4  Reviews
    Special Price £358 .64 Regular Price £431.00
    May Sale
    Save £56.28
    free-delivery

    Free delivery from Thursday 16th May

  4. Silentnight Miracoil Eco Aide Mattress
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    tension

    Firm

    Mattress Type:

    Miracoil Springs

    Miracoil Springs

    Comfort Fillings

    Comfort Fillings

    Silentnight Miracoil Eco Aide Mattress

    brand
    Rating:
    100%
    4  Reviews
    Special Price £348 .65 Regular Price £419.00
    May Sale
    Save £60.30
    free-delivery

    Free Delivery available within 7 - 14 Days

  5. Sleepeezee Sapphire 1400 Mattress
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    tension

    Firm

    Mattress Type:

    Pocket Springs

    1400 Pocket Springs

    Comfort Fillings

    Comfort Fillings

    Sleepeezee Sapphire 1400 Mattress

    brand
    Special Price £499 .00 Regular Price £589.00
    May Sale
    Save £90.00
    free-delivery

    Free Delivery available within 7 - 21 Days

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Mattress Buying Guide

What is the best type of mattress?

Each type of mattress has its benefits, firmness, and feel. As each body is different, it is important to know your sleeping needs to choose a mattress that can provide you with the best support and comfort.

When choosing a mattress, you should think of your sleeping circumstances, the level of support you need, and the feeling you want to achieve. If you want a traditional mattress with natural fillings offering great support, then a pocket spring mattress might be the right choice. A memory foam mattress might be your best choice if you need a mattress to help alleviate back pain.

When it comes to firmness, the most important thing is to choose a mattress that you feel comfortable on.

What should I consider when choosing a size?

  • Number of Sleepers: If you're sharing the bed with a partner or spouse, it's generally recommended to choose at least a double-sized mattress or larger for adequate space and comfort.
  • Bedroom Size: Measure your bedroom to ensure that the selected mattress size fits comfortably, allowing space for other furniture and easy movement around the room.
  • Personal Comfort Preferences: Consider your own sleeping habits and preferences. If you tend to move around a lot during sleep, a larger mattress may provide more comfort.
  • Guest Accommodations: If the mattress is for a guest room, consider the typical guests you'll host. A double or king-size mattress can offer flexibility for accommodating couples or individual guests comfortably.
  • Budget: Larger mattresses generally come with higher costs. Set a budget that aligns with your needs and preferences while considering the overall cost, including bed linens and accessories.
  • Room Layout: Consider the layout of your bedroom, including the placement of doors, windows, and other furniture. Ensure the mattress size allows for a balanced and aesthetically pleasing arrangement.

Remember that individual preferences and needs vary, so the best mattress size for you will depend on your specific circumstances. If possible, try out mattresses in a showroom or take advantage of trial periods offered by mattress retailers to determine the most comfortable size for your sleep habits

What mattresses are recommended?

We recommend you check our Award Winning Mattresses section for the best-selling options.

What are the sizes of mattresses?

The table below shows the lengths and widths of all UK-sized mattresses

Mattress Size Table

Mattress Size Imperial Metric
Small Single 2'6" x 6'3" 75cm x 190cm
Single 3' x 6'3" 90cm x 190cm
Small Double 4' x 6'3" 120cm x 190cm
Double 4'6" x 6'3" 135cm x 190cm
Kingsize 5' x 6'6" 150cm x 200cm
Super Kingsize 6' x 6'6" 180cm x 200cm

How do I choose a mattress?

Sleeping on a supportive base is essential for a good night's sleep. Before purchasing, it is important to research what mattress is best for your individual sleeping needs. When you shop for a mattress, you should consider the following: mattress firmness, your sleeping position, your weight, special needs (joint pain, back pain, allergies, asthma), and your budget.

Which mattress size should I get?

Choosing the right mattress size depends on several factors, including the number of people using the mattress, the size of the bedroom, and individual preferences. Here are the standard mattress sizes and considerations for each:

  • Single Mattress (3 feet x 6 feet 3 inches / 90 cm x 190 cm):
    • Ideal For: Children's bedrooms
    • Ideal For: Guest rooms with limited space
    • Ideal For: Individuals with smaller bedrooms or those who sleep alone

  • Small Double Mattress (4 feet x 6 feet 3 inches / 120 cm x 190 cm):
    • Ideal For: Individuals who want more sleeping space than a single bed
    • Ideal For: Guest rooms accommodating one adult comfortably

  • Double Mattress (4 feet 6 inches x 6 feet 3 inches / 135 cm x 190 cm):
    • Ideal For: Couples with limited space
    • Ideal For: Individuals who enjoy more sleeping space
    • Ideal For: Guest rooms accommodating couples occasionally

  • King Size Mattress (5 feet x 6 feet 6 inches / 150 cm x 200 cm):
    • Ideal For: Couples who want extra space
    • Ideal For: Larger bedrooms with ample space
    • Ideal For: Individuals who prefer more room while sleeping

  • Super King Size Mattress (6 feet x 6 feet 6 inches / 180 cm x 200 cm):
    • Ideal For: Couples who want maximum space
    • Ideal For: Larger master bedrooms with spacious layouts
    • Ideal For: Individuals who prioritize a spacious sleep environment

What is the healthiest type of mattress?

The healthiest mattress provides you with the right amount of support and comfort. Memory foam and pocket springs offer the most benefits as these systems help keep your body properly supported, leading to a more regenerative and deeper sleep. This, in turn, will help make you feel refreshed and recharged when you wake each day. Sleepeezee mattresses have a range of hybrid mattresses encompassing both pocket springs and memory gel, offering the best of both worlds for comfort and support.

How do I choose the right mattress firmness?

The right mattress firmness depends on your body shape, weight, sleeping position, and preferences. We offer a wide range of mattress firmness from soft to firm that you can find in our "By Comfort" Section.

If you are a back sleeper, you should opt for a medium-firm mattress. As a side sleeper, you should try a medium-feel, and as a stomach sleeper, a firm mattress might be your best option.

How do I dispose of an old mattress?

We are highly committed to protecting the environment. Therefore, we offer a Disposal and Recycle Service. We can collect your old mattress as soon as we deliver a new one, rest assured that we will dispose of your old mattress in an environmentally friendly way.

What mattress brands are available?

There are numerous mattress brands available, offering a wide range of options in terms of materials, construction, firmness, and price points. The popularity and reputation of mattress brands can vary based on customer reviews, industry recognition, and personal preferences. Here are the brands currently available:

  • Breasley
  • Dormeo
  • Giltedge
  • Millbrook
  • Relyon
  • Shire
  • Silentnight
  • Sleepeezee
  • Sleepsoul

What are the different types of mattresses?

Open Coil Mattress

The open coil mattress is a popular budget option that contains one long piece of metal wire coiled into numerous springs. They are the most common type of mattresses, but with the new industry innovations, they tend to be less supportive than other mattresses.

Pocket Spring Mattress

Made from individual springs housed in their fabric pocket, providing more support than open coil mattresses.

Memory Foam

Made from memory foam, a mouldable material that responds to temperature and weight and has hypo-allergenic properties.

Latex Mattress

Filled with latex foam, this mattress is breathable and prevents overheating. They are also good for those suffering from allergies or asthma.

Hybrid Mattress

A combination of pocket springs and other materials such as memory foam or latex. They often come as a pocket spring base and a memory foam layer, combining comfort and support.

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