Sleep Unlimited

What Sleep Unlimited does

Sleep Unlimited Ltd is a UK-based sleep health services company founded in 2003 by Dr David Lee, operating from Consett and Gateshead. The company is positioned as the largest dedicated team of sleep experts in the UK, delivering cognitive behavioural therapy for insomnia (CBTi) and adjacent clinical services to three customer segments: individual consumers (iSleep), healthcare professionals (uSleep), and organisations (weSleep). Its core proprietary asset is the R.E.S.T.® programme, a second-generation CBTi framework registered as a trademark and structured into a multi-part curriculum.

The product surface combines clinical training programmes (delivered in person and via e-learning), structured patient assessment services, and actigraphy-based reporting. Training is delivered under accreditations from the British Psychological Society (BPS) and IOSH, and is reinforced by the founder's published book "Sleep Better" (second edition, 2023). The clinical bench comprises chartered psychologists, RPSGT-credentialed sleep technologists, and PhD-level sleep scientists, including recent senior hires Denise Kelly-Hughes, Dr Tom Adams, and Dr Toby Cushing.

The business model is primarily professional services: training fees paid by delegates and organisations, plus assessment and case management fees for clinical work. Distribution is anchored by placements on BPS Learn, IOSH approval for corporate safety training, and a partnership with Super Wellness, with reported reach into 200 NHS Trusts, 5,000+ trained healthcare professionals, and 160+ case management companies. The company is founder-owned, has not raised external capital, and operates with 11-50 employees.

Name

Sleep Unlimited

Legal name

Sleep Unlimited Ltd

Website

https://sleepunlimited.co.uk

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

11–50 employees

Short description

Sleep Unlimited is a UK-based clinical sleep health company delivering CBTi-based training, assessments, and corporate programmes to consumers, healthcare professionals, and organisations, via its proprietary R.E.S.T.® curriculum and accredited training pathways.

Ownership category

akta.pro rank

Product category

Sleep Medicine Services

NAICS

Offices of Physicians (6211), Outpatient Mental Health and Substance Abuse Centers (621420), Offices of Physical, Occupational and Speech Therapists, and Audiologists (62134)

SIC

Services-Health Services (8000), Services-Educational Services (8200), Services-Home Health Care Services (8082)

akta.pro primary industry

Sleep Medicine Clinic (HLAKANAB)

akta.pro secondary industries

Ambulatory Sleep Medicine Centers (HLAFABAJ), Sleep Diagnostics & Monitoring (PSG/Home Sleep Testing, Actigraphy) (HLAHAGAB), Sleep Health & Recovery Education (EDAAAHAE)

Keywords

• Sleep assessment services
• Insomnia treatment
• Sleep training programmes
• CBTi therapy
• Occupational sleep health

Headquarters

HQ city

Consett

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Training Services: Open courses for healthcare professionals (REST Programme foundation and advanced days), IOSH approved courses, bespoke in-house training for organisations, web-based training subscriptions, Lunch & Learn sessions. Revenue generated through course fees for individuals and organisations.
2. iSleep Assessments: Personal sleep assessments for individuals struggling with insomnia or sleep problems. Online assessment followed by personalised report and follow-up consultation with Sleep Doctor. Revenue generated through assessment fees.
3. Actigraphy Assessments: Complex assessments for individuals with neurological conditions, brain injuries, or litigation cases. Two-week monitoring period with comprehensive report from Sleep Psychologist. Revenue generated per assessment.
4. Oximetry/ApneaLink Testing: Sleep Apnoea testing using overnight oximetry devices worn at home. Includes respiratory medicine team analysis and doctor consultation. Revenue generated per test.
5. Corporate/Organisation Services: Employee sleep workshops, occupational health training, executive assessments, professional driver screening. Organisations purchase packages of assessments for 12-month period.
6. Expert Witness Services: Expert testimony and reports for legal cases involving sleep issues, particularly for brain injury and clinical negligence casework.

Go-to-market motion4 records

Distribution channels6 records

Marketing channels8 records

Core offering

Sleep Unlimited provides evidence-based sleep assessment, treatment, and training services built around its proprietary R.E.S.T.® programme, a second-generation Cognitive Behavioural Therapy for Insomnia (CBTi) approach. It operates three branded service divisions: iSleep (personal sleep assessments for individuals), uSleep (training and actigraphy assessments for health and social care professionals), and weSleep (employee sleep workshops, occupational health training, and Sleep Apnoea screening for organisations). Supplementary offerings include expert witness services, executive and elite sports assessments, and IOSH-approved and BPS-delivered training courses.

Product overview

Sleep Unlimited is a sleep medicine company offering a comprehensive portfolio of evidence-based sleep assessment and treatment services. The core offering centers on the R.E.S.T.® Programme—a second-generation CBT for insomnia treatment—supplemented by three branded service divisions: iSleep® (personal sleep assessment for individuals), uSleep (professional services for health and social care workers), and weSleep (organizational services for businesses). The company provides specialized assessments including actigraphy monitoring, ApneaLink/oximetry testing for sleep apnoea, and delivers training through open courses, in-house programs, and IOSH-approved certification. Additional offerings include expert witness services, executive sleep assessments, and elite sports performance assessments. The portfolio spans individual consumer services, B2B occupational health solutions, and professional training for healthcare providers across the UK NHS trusts.

Differentiator

Problem solved

Functional benefit

Products and services

• R.E.S.T.® Programme Second-generation CBTi programme used across Sleep Unlimited's training, assessment, and treatment services. Provides comprehensive assessment informing bespoke, tailored treatment for each client's specific sleep problems.
• iSleep® Personal Sleep Assessment Personal sleep assessment and treatment service for individuals suffering from insomnia and sleep problems. Includes a comprehensive online assessment, personalised iSleep workbook with tailored sleep prescription, and follow-up consultations with sleep doctors.
• uSleep (Health and Social Care Professional Services) Service division for health and social care professionals providing specialist sleep assessments and training. Includes actigraphic assessments for complex cases, professional training courses, and overnight oximetry for sleep apnoea testing.
• weSleep (Organisational Sleep Services) Organisational services division providing sleep training, assessment, and treatment for employees, and consultation services for businesses, health, and social care organisations. Includes workshops, web-based training, occupational health training, and Sleep Apnoea screening for professional drivers.
• Actigraphy Assessment In-depth assessment using non-invasive actigraphic devices worn on the wrist to monitor rest and activity cycles over 2 weeks to 2 months. Provides objective data on activity, sleep, rest, and fatigue for clients with complex conditions including brain injury and neurological disorders.
• ApneaLink/Oximetry Testing Home-based overnight Sleep Apnoea testing using ApneaLink devices. Includes finger sensor for blood oxygen levels and pulse rates, chest belt for effort measurement, and nasal canula for breathing and snoring recording. Results returned within two weeks.
• Sleep in Complex Conditions Course

Quantifiable outcome

• 100% of open course attendees agreed training met personal expectations and will be useful for professional practice
• +1 more outcomes

Named customers14 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core, supporting and minor.

• British Psychological Society (BPS)coreStrategic or Co-development Partner · 1 March 2022Training modules available via BPS Virtual Learning Platform (BPS Learn). The Psychology of Sleep series created by Dr David Lee includes six modules covering Psychophysiology of sleep, Sleep and Mental Health, NICE approved CBTi introduction, shift working, child sleep, and Sleep Apnoea. Includes live Q&A with Dr Lee. First time a sleep course has been recognised by a professional registration body of such high repute.
• NR TimessupportingGTM or Marketing PartnerMonthly blog content partnership featuring articles on sleep topics including Managing Sleep in Long Covid, Impact of Stress on Sleep, Sleep and the School Summer Holidays, Impact of Alcohol on Sleep. Content published in NR Times online magazine.
• Super WellnesssupportingGTM or Marketing PartnerPartnership for delivering 'Introduction to Sleep' training for wellbeing champions across the UK. Super Wellness offers Sleep Unlimited's hour-long training sessions to their workplace wellbeing network.
• CBIT AppminorStrategic or Co-development PartnerAssociation with CBIT app helping families with children with acquired brain injuries find support to improve their child's health and wellbeing through sleep interventions.
• IOSHcoreChannel Partner/ Reseller/ DistributorIOSH approved 'Sleeping Well to Work Safely' course (CA1867). Pending approval to deliver training to IOSH members. Day-long course for anyone working globally who may be experiencing or supporting employees with sleep problems.
• Association of Occupational Therapists in Ireland (AOTI)supportingChannel Partner/ Reseller/ DistributorDelivered Day One of REST Programme to AOTI in December 2022 with plans to deliver Day Two and provide film subscriptions in 2023.
• Faculty of Occupational Health Nursing (FOHN)minorGTM or Marketing PartnerFOHN promoted Sleep Unlimited training to their members as part of ongoing awareness of sleep health in occupational settings.
• HalsaminorOthersMet at Health and Wellbeing at Work Conference. Part of industry network of sleep and wellbeing specialists.
• Vocational Rehabilitation Association (VRA)minorOthersDr David Lee holds membership. Met at Health and Wellbeing at Work Conference.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Pzizz: App-based sleep improvement tool using audio and psychoacoustic techniques. Emerging player in the consumer sleep wellness market, overlapping with Sleep Unlimited's individual-facing iSleep product in addressing insomnia through accessible, technology-led solutions.
• IESO Digital Health: UK-based digital therapeutic company providing online CBT, including for insomnia, with NHS partnerships. Comparable as a UK-headquartered digital CBT provider competing for similar NHS and consumer sleep treatment demand through a more technology-led delivery model.
• The Sleep Charity: UK charity providing sleep advice, training, and resources for the public and professionals. Comparable in mission and education/training focus, with overlap in healthcare professional training, though operates as a non-profit and lacks Sleep Unlimited's clinical assessment and medico-legal services.

Direct peers

• Sleepstation: Sleepstation is a UK-based sleep improvement service providing online CBTi with human therapist support, NHS-approved. Directly comparable to Sleep Unlimited's iSleep offering in terms of target market (UK consumers and NHS) and treatment methodology (CBTi), differing mainly in delivery model (digital vs. paper-based workbook).
• Big Health (Sleepio): Big Health's Sleepio is a digital CBTi program offering fully automated, evidence-based insomnia treatment via app. It is a direct competitor in the CBTi space, serving both consumers and enterprise/healthcare clients with NICE-aligned sleep therapy, though delivered via digital rather than in-person clinical model.
• The London Sleep Centre: UK private sleep clinic offering diagnostic sleep studies, specialist consultations, and treatment for insomnia and sleep disorders. Directly comparable as a UK specialist sleep clinic with similar diagnostic and clinical services, though more focused on physician-led consultations than training and corporate services.
• Insomnia Clinic (The): UK private insomnia clinic offering CBTi treatment from clinical psychologists. Directly comparable as a UK specialist sleep clinic providing face-to-face and remote CBTi services, overlapping with Sleep Unlimited's iSleep and training offerings for similar client profiles.

Broad incumbents

• Headspace: Global mental wellness and sleep app offering guided meditations, sleepcasts, and CBT-inspired content for consumers and employers. Broad incumbent in workplace wellbeing space directly competing with Sleep Unlimited's weSleep corporate offering, though focused on digital self-help rather than clinical assessment.
• BetterHelp: Large online therapy platform connecting consumers to licensed therapists including those specializing in CBT and insomnia. A broad incumbent in digital mental health; comparable as a delivery mechanism for CBT-based sleep treatment, though much larger scale and broader scope than Sleep Unlimited's specialist focus.
• ResMed: Global leader in sleep apnea treatment devices (CPAP, masks) and connected health platforms for sleep-disordered breathing. Broad incumbent in sleep medicine; comparable in sleep diagnostics and sleep apnea testing space where Sleep Unlimited's ApneaLink/oximetry service operates, though ResMed is far larger and device-focused.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SleepUnLtd
• Facebookfacebook.com/SleepUnlimited
• LinkedInlinkedin.com/company/sleep-unlimited-ltd

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sleep Unlimited