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About SWLP

South West London Pathology is an NHS pathology partnership set up by St George’s University Hospitals NHS Foundation Trust, Croydon Health Services NHS Trust and Kingston Hospital NHS Foundation Trust to provide a single, integrated pathology service across South West London and beyond. On 1 May 2021, Epsom and St Helier University Hospitals NHS Trust joined to form an expanded South West London Pathology partnership.

Providing core and specialist services

We offer a wide range of diagnostic and clinical support services to our five hospitals and GPs across London and further, as well as to other NHS institutions and private organisations. Our service covers 3.5 million people across south west London via five hospitals and over 450 GP practices.

We provide an extensive repertoire of tests as well as a comprehensive set of specialist tests and services. We provide an efficient service that is high in quality and value for money.

We regularly review our repertoire and introduce new diagnostic tests that allow for more specific diagnosis or provide quicker turnaround times which will speed up a patient’s diagnosis.

State-of-the-art laboratories

All of our laboratories are state of the art and adopt the most up-to-date and cutting edge technology. The laboratories at Croydon, Epsom and St Helier, Kingston and St George’s hospitals offer fully-automated blood sciences services.

The hub laboratory at St George’s Hospital also has leading microbiology laboratories with the newest technology, an immunology laboratory with a specialist protein reference unit and modern cellular pathology laboratories providing a full range of core and specialist services.

Expert clinical advice

We have experienced consultant pathologists who can provide extensive clinical and interpretative advice to those using our services. They are supported by clinical and biomedical scientists and additional support staff provide analytical, interpretive and advisory services across our network of laboratories.

Our clinical blood sciences and microbiology laboratories operate 24 hours a day, every day of the year. Clinical and scientific advice is also currently available 24 hours a day.

Fully accredited labs

All our laboratories are regularly inspected and are accredited and regulated by external agencies such as UKAS.

Latest news

March 17, 2026

Updated criteria for C. difficile testing in community patients

The Microbiology laboratory at South West London Pathology (SWLP) is now following advice set out in the UK Standards for Microbiology Investigation for the investigation of faecal specimens for Clostridioides difficile (UKHSA) regarding criteria for C. difficile testing.

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March 8, 2026

Ambition and success: Anna Parley on International Women’s Day

For Anna Parley, Communications and Marketing Lead at South West London Pathology, International Women’s Day is both a celebration and a moment of reflection.

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March 2, 2026

Immunology Laboratory upgrade – latest updates

The Immunology Laboratory is undergoing a major upgrade in partnership with Siemens.  The project includes installation of a new automated sample handling system, consolidation of lab testing onto fewer analytical platforms and repatriation of many tests.

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February 16, 2026

A day in the life of Thomas Walton, SWLP’s Chemistry Network Lead

In the fast-paced world of pathology, where millions of samples are processed to unlock the secrets of health and disease, leadership is less about sitting behind a desk and more about orchestrating a complex, human-centred operation. For Thomas Walton, the Chemistry Network Lead for SWLP, every day is a dynamic puzzle of people, processes, and innovation.

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