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Fast, accurate and accessible diagnostic services

The Diagnostic Centre at The Harley Street Clinic offers a wide range of tests, scans and biopsies within one accessible location in the heart of Marylebone and we can often carry out multiple diagnostic tests on the same day to minimise trips into hospital.

We know how daunting waiting for tests and results can be, which is why we offer same-day appointments. Consultants and radiographers will report on your scans as soon as possible to ensure you receive a fast diagnosis and in some cases we can even carry out minimally-invasive treatments on the same day as your initial consultation. Should you require further treatment, our team of world-renowned consultants and highly-skilled nursing staff are there to advise and support you throughout your care.

In a single visit we can offer…

Gynaecology consultation at The Shard


You'll see a specialist consultant at The Harley Street Clinic, often a leader in their field. They'll be able to diagnose your condition based on any scans or tests done - on the same day where possible.

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Dr Ali Sever, Radiologist at The Shard

Prearranged one-visit clinics

Before you come, your consultant or GP may recommend certain scans or tests. We'll organise all these to take place on the same day to avoid multiple trips to hospital.

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Rick Popert at The Shard

Unplanned diagnostics

If your consultant decides you need further or unplanned tests on the day, you shouldn't have to wait or go to another centre. We aim to arrange all diagnostic tests to done on the same day.

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Just some of the tests and procedures we provide

  • Echocardiograms
  • Sleep monitoring
  • Dental X-Ray
  • Blood pressure monitoring
  • Blood test
  • Lung function testing

The latest technologies

We take pride in investing in the latest diagnostic technologies to ensure our patients receive a precise and accurate diagnosis. From ultra-fast low-dose cardiac CT scanner to innovative new computer simulation and modelling technologies, our multidisciplinary teams of consultants and technicians are equipped with state-of-the-art tools to aid their decision making.

We also have one of the UK’s most advanced molecular imaging centres in the UK, offering SPECT CT and PET CT scans, allowing us to observe pathological changes within the body and achieve an incredibly detailed diagnosis of complex conditions.

MRI scan of the head and neck

Imaging, X-rays, CT and MRI scans

Whatever scan you need, we offer minimal waiting times and use the latest technologies to ensure you get a fast and accurate diagnosis.

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Prostate-specific antigen (PSA) blood test


Whatever screening you may require, you shouldn’t have to wait for routine tests and screenings to keep on top of your health.

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Technology at The Harley Street Clinic

Minor treatments

In some cases, we can treat a number of most minor conditions on the day, such as kidney stones and varicose veins. Self-paying patients don't even need a referral and can simply book a consultation.

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Our Specialties

The Diagnostic Centre is the main outpatient facility at The Harley Street Clinic, situated within London’s famous medical district. Aside from a wide range of diagnostic tests, we have world renowned consultants covering the complete range of specialties including:

Frequently asked questions

  • Is it safe for me to visit The Harley Street Clinic? icon plus

    Nobody should have to jeopardise their safety to access care, which is why the Devonshire Diagnostic Centre has gone above and beyond national guidelines around COVID-19 to maintain the safest possible environment.

    As well as testing our staff are tested weekly, we also screen all patients and staff for COVID-19 on arrival, have hand washing stations positioned throughout the Centre and we also have a range of hygiene and disinfection measures in place throughout the entire hospital.

    Find out more about the patient safety protocols in place across HCA UK sites.

  • Can I bring someone with me? icon plus

    As a result of Covid-19 we’re asking people to come to their appointment unaccompanied in order to keep our spaces space, with visitors only allowed in consultations under specific circumstances. We hope to welcome friends and family in the future.

    If you require assistance on your visit, carers can be allowed if you prearrange this with our concierge or your consultant’s secretary. Our nursing team are on hand to support you at all times during your visit.

  • Is there disability access? icon plus

    We are committed to guaranteeing that patients with disability, their families and carers are not discriminated against in any way and that they have access to the full range of our services, facilities and information.

    If you have a disability and are coming to the Diagnostic Centre for an appointment please let us know before you attend so that we can discuss what support you may need. Please let us know if you have any special requirements such as:

    A disability requiring assisted access

    Hearing or sight difficulties

    Need of an interpreter

  • Is there a pharmacy on site? icon plus

    We do have a pharmacy on the ground floor of the Diagnostic Centre, located on Devonshire Street. Should you need any medication, your doctor will provide you with a private prescription that you can pick up before you leave and our pharmacists can also offer any pharmaceutical advice you might need.
  • Do I need a referral to make an appointment? icon plus

    You do not need a referral to book in a consultation, scan or treatment with us. If you wish for your health insurance to cover the cost of your care you will need a referral from your GP but you can also pay for services as and when you need them.

    Contact our self-pay team on for more information on paying for your treatment: 020 7034 8551

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Any questions? Get in touch and we'll be happy to help.

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