The Doctors Laboratory
The Doctors Laboratory is a UKAS-accredited, medically-led diagnostic pathology laboratory in London providing testing across 23 specialties to NHS hospitals, private hospitals, GP practices, clinical specialists, and direct private patients via reception, home visits, postal pathology, and self-collect kits, operating within the Sonic Healthcare UK group.
- Company typePrivate
- Founded1987
- HeadquartersLondon, United Kingdom
- Headcount251–500
- GTM typeB2B and B2C
- OfferingServices
What The Doctors Laboratory does
The Doctors Laboratory (TDL) is a medically-led diagnostic pathology laboratory headquartered at The Halo Building, 1 Mabledon Place, London, founded in 1987 and operating as part of Sonic Healthcare UK. TDL provides accredited clinical pathology testing services across 23 specialty areas including clinical biochemistry, haematology, immunology, microbiology, genetics, molecular diagnostics (PCR), histopathology, cytology, virology, allergy, andrology, cervical screening, endocrinology, occupational health, reproductive health, sexual health, tumour markers, and vitamins and nutrition. Its testing infrastructure underpins UKAS-accredited COVID-19 RT-PCR testing (number 8059 via HSL Analytics LLP within the Sonic Healthcare group) and includes differentiated offerings such as the Stockholm3 prostate cancer test and the Ziwig Endotest saliva-based endometriosis test.
TDL sells through two parallel go-to-market motions. The B2B motion targets NHS hospitals, private hospitals, GP practices, and clinical specialists via direct sales relationships, with clinician-facing workflow tools including TDL eViewPlus for electronic result reporting, the annual TDL Laboratory Guide, online booking for TDL Collect and andrology services, and bundled diagnostic profiles. The direct-to-consumer motion targets private patients through 76 Wimpole Street patient reception (open 7am-7pm weekdays plus weekend hours), home visits, TDL Postal Pathology for remote sample submission, and TDL Self-Collect Kits. Pricing is quote-based, billed per test or profile to providers and patients, with separate NHS and private-sector pricing structures; no public price list is disclosed.
The Doctors Laboratory Limited is a private limited company registered in England and Wales (company number 02201998) with 251-500 employees. Revenue, funding, ownership structure, and management team composition are not publicly disclosed in the available data. The company operates an annual publication cadence (Laboratory Guide 2026 most recent), maintains UK registered trademarks across the TDL, TDL Genetics, TDL Tinies, and TDL Tiny brands, and serves customers across the UK and internationally through its Sonic Healthcare group affiliation.
The Doctors Laboratory firmographics
Firmographics- Name
- The Doctors Laboratory
- Legal name
- The Doctors Laboratory Limited
- Website
- https://tdlpathology.com
- Company type
- Private
- Founded year
- 1987
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- The Doctors Laboratory is a UKAS-accredited, medically-led diagnostic pathology laboratory in London providing testing across 23 specialties to NHS hospitals, private hospitals, GP practices, clinical specialists, and direct private patients via reception, home visits, postal pathology, and self-collect kits, operating within the Sonic Healthcare UK group.
- Ownership category
- akta.pro rank
The Doctors Laboratory industry classification
Industry- Product category
- Diagnostic Pathology Services
- NAICS
- Medical Laboratories (621511), Medical and Diagnostic Laboratories (6215), Medical and Diagnostic Laboratories (62151)
- SIC
- Services-Medical Laboratories (8071)
- akta.pro primary industry
- Reference & Esoteric Testing Laboratories (HLAFAMAJ)
- akta.pro secondary industries
- Remote Diagnostics & Point-of-Care (Connected Testing, Home Lab Devices) (HLACAPAK), Toxicology & Therapeutic Drug Monitoring Laboratories (HLAFAMAF)
Keywords
Where The Doctors Laboratory is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
The Doctors Laboratory business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D
Revenue model
- Clinical Pathology Testing Services: Laboratory diagnostic testing services billed to healthcare providers, NHS, private hospitals, clinics, and direct patients. Revenue generated per test or profile ordered.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Quote-based laboratory testing services |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels2 records
The Doctors Laboratory product offering
Product offeringCore offering
The Doctors Laboratory (TDL) is a UK-based independent pathology and clinical laboratory provider that delivers diagnostic testing across a broad range of medical specialties for healthcare clinicians, GP practices and private patients. It offers sample collection, laboratory analysis and results reporting through both provider-facing and patient-facing channels.
Product overview
The Doctors Laboratory is a medically-led diagnostic pathology laboratory providing quality accredited pathology services. The company operates a unified service model centered on its core testing portfolio organized across 21 specialty areas including Allergy, Andrology, Biochemistry, Genetics, Haematology, Histopathology, Immunology, Microbiology, and Virology. TDL's patient-facing services include Self-Collect Kits for home sampling, TDL Postal Pathology for remote testing, and patient reception facilities. Clinicians access results through the TDL eViewPlus online portal and can book appointments via TDL Collect Online Booking or Andrology Online Booking. The company also offers clinical trial services through TDL Trials. Supporting resources include the TDL Test List (comprehensive A-Z test directory), TDL Profiles (bundled test panels), and the annual TDL Laboratory Guide publication.
Differentiator
Problem solved
Functional benefit
Brands
- TDL GENETICS: Genetics division of The Doctors Laboratory providing genetic testing services.
- TDL TINIES
- TDL TINY
Products and services
- TDL eViewPlus An online results portal enabling healthcare clinicians to view and manage patient pathology test results digitally.
- TDL Collect An online booking and sample collection service allowing patients and clinicians to arrange appointments for specimen collection.
- Self-Collect Kits Home testing kits enabling patients to collect their own samples for pathology testing without visiting a clinic.
- TDL Postal Pathology A postal service through which patients send collected samples to the laboratory for pathology analysis.
- Home Visits In-home sample collection service where clinical staff visit private patients to collect specimens for testing.
- TDL Trials Clinical trial laboratory services supporting research organizations with pathology testing for clinical studies.
Companies that use The Doctors Laboratory
Customer profileSegments3 records
Ideal customer profiles2 records
The Doctors Laboratory technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
The Doctors Laboratory partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- HSL Analytics LLPcoreCOVID-19 RT-PCR testing undertaken by TDL group laboratories under UKAS number 8059 (HSL Analytics LLP), indicating a closely integrated testing partnership within the Sonic Healthcare group.
- Sonic Healthcare UKcoreTDL is part of Sonic Healthcare UK, referencing Sonic Healthcare UK Tax Strategy on corporate pages. Sonic Healthcare is a global medical diagnostics company.
Scale indicators2 records
Recent moves6 records
Expansion highlights6 records
The Doctors Laboratory competitors and assessment
Company assessmentDirect peers
- Synlab: Synlab is Europe's largest medical diagnostics services provider, offering clinical laboratory testing across routine and specialty disciplines to hospitals, clinicians, and patients. It is the most direct comparison to TDL in terms of business model, test menu breadth, and pan-European private pathology footprint.
- Unilabs: Unilabs is a major European clinical diagnostics and pathology laboratory operator serving hospitals, clinicians, and private patients across multiple countries. Its mix of routine and specialty clinical testing directly mirrors TDL's service portfolio and B2B/B2C go-to-market.
- Health Services Laboratories (HSL): HSL is a London-based pathology partnership (including HSL Analytics LLP, which holds UKAS No. 8059 referenced by TDL) providing clinical diagnostics to NHS and private hospitals. It is a direct UK pathology peer and a partner referenced in TDL's COVID-19 testing operations.
- Medicover: Medicover operates clinical laboratories and diagnostic services across Central and Eastern Europe alongside its healthcare facilities, offering routine and specialty testing to clinicians and patients. Comparable to TDL in combining laboratory services with healthcare delivery channels.
Broad incumbents
- Sonic Healthcare: Sonic Healthcare is TDL's parent group and one of the world's largest medical diagnostics companies, operating pathology laboratories across Australia, Europe, and the US. It is the broadest incumbent comparable for TDL's specialty, scale, and global operating model.
- Quest Diagnostics: Quest Diagnostics is one of the largest US-based clinical laboratory networks offering routine, esoteric, and anatomic pathology services to physicians, hospitals, and consumers. Comparable to TDL in the breadth of its test menu, clinician-led B2B model, and growing consumer diagnostics channel.
- Laboratory Corporation of America (Labcorp): Labcorp is a global clinical laboratory and diagnostics giant offering routine, specialty, and clinical trial lab services to providers, biopharma, and consumers. Comparable to TDL across clinical diagnostics, clinical trials (TDL Trials analog), and direct-to-consumer testing.
Others
- Nuffield Health: Nuffield Health is a UK charity operating private hospitals and wellbeing services that include in-house pathology and diagnostic testing. It overlaps with TDL as a UK private healthcare provider delivering diagnostic services to clinicians and patients.
- Spire Healthcare: Spire Healthcare is a major UK private hospital group with on-site pathology and diagnostic services used by its consultants and referred patients. It represents an adjacent UK healthcare operator with overlapping diagnostic testing needs to those TDL serves.
- The London Clinic: The London Clinic is a London-based private hospital offering diagnostic services to consultants and private patients. As a London-located private healthcare provider with on-site diagnostics, it is an adjacent peer within TDL's primary operating geography.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
The Doctors Laboratory financial estimates
Financial estimateRevenue estimate
Valuation estimate
The Doctors Laboratory leadership team
Management profileNumber of profiles
The Doctors Laboratory funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
The Doctors Laboratory M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about The Doctors Laboratory
What does The Doctors Laboratory do?
The Doctors Laboratory (TDL) is a UK-based independent pathology and clinical laboratory provider that delivers diagnostic testing across a broad range of medical specialties for healthcare clinicians, GP practices and private patients. It offers sample collection, laboratory analysis and results reporting through both provider-facing and patient-facing channels.
Is The Doctors Laboratory a public or private company?
The Doctors Laboratory is a private company. It is classified as corporate owned and is currently operating.
When was The Doctors Laboratory founded?
The Doctors Laboratory was founded in 1987. It employs 251 to 500 people.
Where is The Doctors Laboratory based?
The Doctors Laboratory is headquartered in London, United Kingdom, in the Europe region.
How does The Doctors Laboratory make money?
One revenue line is on record: clinical Pathology Testing Services.
Who are The Doctors Laboratory's main competitors?
Direct peers on record are Synlab, Unilabs, Health Services Laboratories (HSL) and Medicover. Broad incumbents are Sonic Healthcare, Quest Diagnostics and Laboratory Corporation of America (Labcorp). Others are Nuffield Health, Spire Healthcare and The London Clinic.
Does The Doctors Laboratory have an API?
No public API is recorded for The Doctors Laboratory.
What industry is The Doctors Laboratory in?
The Doctors Laboratory's product category is Diagnostic Pathology Services. Its primary akta.pro industry code is HLAFAMAJ, Reference & Esoteric Testing Laboratories, with a secondary code of HLACAPAK, Remote Diagnostics & Point-of-Care (Connected Testing, Home Lab Devices). Its NAICS code is 621511 and its SIC code is 8071.