Claire Davies

Claire Davies

Managing Editor of Sleep, Certified Sleep Science Coach

Claire is a Certified Sleep Science Coach and the Managing Editor of Sleep at Tom's Guide. She oversees our rigorous mattress testing procedures, and our buying guides and mattress rankings. Claire has over 16 years' product review experience and is connected to a wealth of globally renowned sleep experts including mattress designers, neuroscientists, and board-certified sleep doctors. She is also our in-house expert on Saatva, DreamCloud, and Nectar Sleep. Claire is certified to advise people on how to choose a mattress that suits their needs and budget, as well as helping them to create a nighttime routine and bedroom environment that helps them sleep better. Previously, Claire reported on sleep and wellness tech for T3 and TechRadar.

Latest articles by Claire Davies

The Simba Simbatex Cool Mattress, pictured here in a neutral-coloured bedroom and placed on a simple wooden bedframe, launched today at Amazon and is exclusive to the online retailer, with prices from £349 and a choice of five sizes to pick from

Simba launches new cooling mattress at Amazon ahead of another summer of gruelling heatwaves

By Claire Davies published

Ooh, a new Simba cooling mattress has launched in time for summer

Mattresses
A woman dressed in a blue night shirt sleeps peacefully on her partner's chest, as he sleeps with his head on a stone colored bed pillow. In the top left hand corner is a blue Tom's Guide Sleep Awareness Week 2026 logo.

Sleep Awareness Week 2026 is here — our guide to the best tips, tech and advice to help you sleep better

By Claire Davies last updated

Presented by Helix Sleep

Our guide to Sleep Awareness Week 2026 features expert interviews, the latest longevity science, and the top-rated tech to help you sleep better.

Sleep
A woman sitting on the end of the Nectar Classic mattress in a bedroom, with a Tom's Guide 'PRICE DROP' badge overlaid

Nectar mattress sales for February 2026: The best deals in the US + UK

By Claire Davies last updated

The March Nectar mattress sale is here with big discounts on memory foam mattresses and bed bundles. Here's out expert guide to the sale.

Mattresses
A Tom's Guide mattress tester sleeping on the DreamCloud mattress

DreamCloud mattress sales for March 2026: Luxury hybrids at low prices

By Claire Davies last updated

We've combed through this month's DreamCloud mattress sales and highlighted the best deals — browse our expert picks.

Mattresses
King size Westin Heavenly Bed on location at Westin New York at Times Square

What mattresses do hotels use?

By Alison Barretta last updated

Our expert guide to the mattresses used by the most celebrated hotels around the world (and yes, you can buy them)

Mattresses
A woman sleeping soundly in bed under a white duvet, as early morning sun shines through the curtains behind her.

4 surprising ways a snowstorm can ruin your sleep — and how to fix it

By Claire Davies published

From taking ages to fall asleep to waking up repeatedly during the night, cold weather can spell trouble for your sleep. Here’s what you need to know…

Sleep
Mattress tester Becky George sits on the middle of the Emma Hybrid Airgrid mattress on a bed frame in our sleep studio, testing the edge support and comfort of the mattress

The 5 best mattresses for better sleep in 2026

By Claire Davies last updated

Editor's Choice

Make 2026 the year you take your sleep seriously. Browse our guide to the 5 best mattresses for your needs and budget, based on our in-depth testing and hands-on experience.

Mattresses
A Simba mattress bundle with a Tom's Guide 'Act Fast' badge

Simba mattress sales and deals for February 2026: Save up to £840 with the best sale since Black Friday

By Becks Shepherd last updated

Don't miss out on Simba's New Year sale — up to 30% off and savings up to £840 in a sale that matches Black Friday discounts!

Mattresses
Two of our mattress testers sitting on the navy and white Bear Elite Hybrid mattress on wooden bedframe in sleep studio with blue walls, wooden bedside table, plant and black chair.

The best cooling mattress 2025: 6 expert-recommended beds for hot sleepers

By Eve Davies last updated

Make 2026 the year you put night sweats to rest with one of these top cooling mattresses, chosen by hot sleepers.

Mattresses
Eight Sleep Pod 4 mattress cover with dual temperature control (indicated by one side of the bed red and the other blue) in bedroom with floor to ceiling windows and a phone icon showing sleep report with 100 sleep score

The 5 best smart beds and smart mattresses 2026: Top picks from a sleep tech reviewer

By Eve Davies last updated

Our sleep tech experts recommend the best smart beds and smart mattresses to regulate your temperature, customize your bed and track your health

Mattresses
The Emma Divan Bed with a mattress and bedding made up in a yellow painted bright room

The best beds and bed frames in 2026: Top 5 picks tested by experts

By Claire Davies last updated

After our expert team put the best beds and bed frames of 2026 to the test, these are the 5 we recommend for all sleep styles and budgets

Mattresses
Lady putting her shoes on sitting on an Avocado Mattress

The best organic mattresses of 2026: Tried and tested by our expert team for clean, non-toxic sleep

By Claire Davies last updated

We put the best organic mattresses of the year to the test. These are the five we recommend for clean, non-toxic sleep.

Mattresses
Nectar Duvet draped on top of the bed

Best duvets 2026

By Claire Davies last updated

Here's our ultimate guide to the best duvets in the market for every season, sleeping style and budget, selected by sleep experts.

Home
A woman with long dark hair blows her nose in bed because she is sick

Doctor reveals common bedroom item that acts as a ‘reservoir’ for the flu virus – plus how often you should wash your bedding when sick

By Claire Davies published

This is exactly how long the flu virus lives on your bed sheets and mattress – plus how often doctors recommend cleaning your bed when you’re sick

Sleep
Eve Premium Hybrid Mattress

The best Black Friday mattress deals of 2025: Our top sales picks for every budget

By Claire Davies last updated

Black Friday might be finished but there are still Cyber Monday deals to be had, and we've picked out the best savings

Mattresses
This image shows two of our sleep team testing mattress in the Sleep Lab, debating when's the best time to shop. On the left, Nicola Appleton sits on a Helix Midnight Luxe mattress. On the right, Ruth Jones sits on a Saatva Classic mattress, a laptop open in her lab as she checks for sales. In the top right corner is a Cyber Monday vs Black Friday mattress deals graphic

Cyber Monday vs Black Friday mattress deals: when is the best time to buy a mattress?

By Claire Davies last updated

Are the Black Friday mattress deals the best time to buy a mattress or do bigger sales arrive on Cyber Monday? We’ve analyzed past sales to find out.

Mattresses
Tom's Guide Sleep Concierge team image shows two of our mattress testers sitting on a luxury hybrid mattress in our sleep product testing lab

Our Cyber Monday Sleep Concierge service is live — get personalized mattress and pillow recommendations direct from our experts

By Claire Davies published

Need a new mattress, pillow or bedding set but unsure where to start? Answer these six simple questions and our Sleep Concierge team will send you recommendations unique to you

Mattresses
Two women sitting on the Siena Signature Memory Foam mattress with a Tom's Guide Black Friday Mattress Deals badge overlaid

3 reasons to buy a mattress in this weekend's sales — don't wait for Black Friday

By Nicola Appleton last updated

Wait for Black Friday and you'll pay the same price for your mattress and risk having to wait longer for it if it isn't out of stock. We’re calling it — now's the time to buy.

Mattresses
Nectar mattress review: The Nectar Mattress placed on a light wooden bed frame with an orange metal suitcase at the end

Nectar Mattress review: Supportive memory foam comfort for low budgets

By Claire Davies last updated

Recommended

The Nectar Memory Foam Mattress promises body-hugging, cooling comfort, but does it deliver? We tested it for three months to find out...

Mattresses
The Eve Premium Hybrid Mattress photographed on a wooden bed frame as part of the review process

Eve Premium Hybrid mattress review: A firm bed for hot sleepers

By Claire Davies last updated

Editor's Choice

The Eve Premium Hybrid is a TV-famous bed-in-a-box, but is it worth the price tag? Here's our thoughts are sleeping on it.

Mattresses
A woman peacefully asleep on a new mattress

A good mattress makes a big difference to how well you sleep — here's why

By Claire Davies last updated

Your mattress has the biggest impact on how comfy (or not) you feel in bed, how quickly you fall asleep, how often you wake up during the night, and how refreshed you feel in the morning

Mattresses
Image is split into four squares, with each square showing a different aspect of our mattress testing process. In the top left hand corner one of our mattress writers performs an effective sleep space test on the DreamCloud Classic mattress. In the top right hand corner you can see our pressure relief weighted indentation test in process, where we are using a standardized stack of weights to measure how much the mattress indents (how well it contours) and how quickly it recovers (how responsive it is). In the bottom left hand corner another our of mattress testers lies on her side on the Saatva Classic mattress during a pressure relief test, with a digital laser projecting a straight line onto her back so we can assess how well the mattress supports spinal alignment. In the bottom right hand corner, one of our mattress testers lies on a hybrid mattress during a thermal regulation test. In the image you can see we're using a thermal imaging camera to measure how much heat the mattress absorbs and how quickly it dissipates that heat.

How we test mattresses

By Claire Davies published

A complete guide to our new methodology and scoring system

Mattresses
Our mattress tester wearing black silk pyjamas laying on her back on the Birch Elite mattress on wooden bedframe in warm lit bedroom with bedside plant, chair, unit, lamp and checkred rug

Don't ignore the 9 key signs that it’s time to buy a new mattress

By Claire Davies last updated

Is it time to replace your mattress? Here are nine telltale signs you need a new one — and three that you just need a new bed topper

Mattresses
A member of our sleep team lies on her side on the Nolah Original Mattress on a bed frame in a bedroom

What are mattress trials and how do they work?

By Claire Davies last updated

Many mattress brands talk about their sleep trial periods, but what are they and how do they work? We have answers.

Mattresses
A woman sits cross-legged on a bed with her eyes closed and her fingers held in a meditative position.

The 'perfect, portable stress antidote' — how to use the 4 7 8 breathing method to fall asleep fast

By Claire Davies last updated

Presented by Nectar

The 4 7 8 sleep method involves a simple breathing technique that's surprisingly effective against anxiety, stress and bedtime worries.

Sleep
1 2 3 4 5 Archives

Other versions of this page are available with specific content for the following regions: