Clinical Diagnostic Services

16/09/2026

State of the art transvaginal ultrasound imaging can identify early pregnancy implantation from 4 weeks gestation onwards. Development of the baby itself can be carried out from 5-6 weeks onwards.

Early monitoring of the baby’s development offers tremendous reassurance to patients particularly with a background of fertility problems or miscarriage. Scanning is very often continued up to 10-12 weeks gestation at which stage NIPT (Harmony Test) is carried out as part of routine antenatal screening for chromosomal anomalies.

For enquiries and appointments contact the CDS team on:

📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk

Clinics based in London and Hertfordshire

11/09/2026

10/09/2026

A significant number of patients attend CDS having had previous mammography X-Ray which reported “dense breasts”. In most cases this simply means there is extensive but healthy glandular tissue within the breast.

Increased glandular tissue can cause general breast tenderness and sensitivity or feeling of lumpiness. In the vast majority of cases, the breasts are otherwise normal. The amount of glandular tissue within the breast naturally varies from individual to individual.

It is accepted that these changes can hide the presence of lesions, whether benign or cancerous, on mammography. Ultrasound examination is better at examining prominent glandular tissue within the breast.

Glandular tissue within the breast often reflects hormonal (oestrogen) changes within the woman’s body. This is particularly relevant in patients using HRT or any form of prolonged ovarian (infertility) stimulation and indeed during pregnancy itself.

CDS offers an established breast healthcheck service using modern ultrasound imaging for patients, especially for those experiencing symptoms or undergoing treatments outlined above or where there is a family history of breast disease.

"DENSE BREASTS” (Quotes from National Cancer Institute guidelines):

Dense breasts can make a mammogram more difficult to interpret.
Mammography is less sensitive in women with dense breasts.
Dense breasts are a risk factor for breast cancer.
Dense breasts are not considered an abnormal breast condition or a disease.

Contact the CDS team for an appointment:
📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk

02/09/2026

Clinical Diagnostics Services, headed by Bill Smith OBE is an internationally established ultrasound practice based in London and Elstree. It is recognised worldwide for its scanning expertise and clinical work carried out in key areas of gynaecology, infertility, pregnancy care and general medical screening, including breast, ovarian, liver, pancreas, testicular and prostate.

For enquiries and patient appointments please contact CDS the team on:

📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk

12/08/2026

Alex O'Connor is a fertility specialist, acupuncturist and clinical investigator. She refers patients to CDS and her thoughts on Bill are:

- He is so knowledgeable and explains things so well and that is helpful for our clients (as well as for us).
- He assesses things from a functional perspective, e.g. he checks blood flow to the corpus luteum, he comments on tissue quality and hormonal factors etc.
- He’s not just trying to ‘green light’ someone into IVF, he’s actually trying to see if he can find anything that might explain infertility.

To find out more about Alex or schedule an appointment contact details are:
📞079 9061 9489
📧[email protected]
🌐www.fertilitydecoded.co.uk

To make an appointment with Bill Smith contact the CDS team on:
📞020 8732 3070
📧[email protected]
🌐www.clinicaldiagnostics.co.uk

07/08/2026

CDS are early pioneers in developing and promoting routine ultrasound assessment of the Fallopian Tubes. A contrast medium, or fluid, is gently flushed through the tubes and visualised using high resolution transvaginal ultrasound scanning.

Initially termed HSS by CDS, the technique is now commonly known as HyCoSy following more recent commercial involvement.

NOTE: It remains of great concern that social media and patient experience report HyCoSy as a “painful” procedure! CDS personnel have carried out thousands of these tubal tests over many decades. Carried out by experienced gynaecologists and ultrasound specialists, we confirm that very, very few patients indeed have suffered from any significant degree of discomfort. We question why so many patients appear to have had such a problem!

HyCoSy procedures at CDS always include a comprehensive gynaecological (transvaginal ultrasound) examination. A (virtual) 3D evaluation of the uterine (womb) cavity and endometrium (lining) can be offered as part of the same procedure if clinically indicated. Patients are welcome and indeed encouraged to arrange a consultation with Mr Bill Smith, Head of CDS in order to address any aspect of the above and for reassurance.

Contact the CDS team on:
📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk

Clinics based in London and Hertfordshire

21/07/2026

Bill Smith at Clinical Diagnostics is my first choice for diagnostic ultrasound referrals. His expertise extends beyond producing high-quality imaging, he genuinely collaborates with referring clinicians to interpret ultrasound findings within the patient's overall clinical picture. That willingness to work together ensures investigations are meaningful, clinically relevant,and focused on improving patient outcomes. Bill's professionalism, clinical insight and commitment to collaborative, patient-centred care make him an outstanding clinician whom I recommend without hesitation.

CDS is recognised widely for its work in key areas of gynaecology and women’s healthcare generally. This has largely been the result of its close working relationship with leading clinical consultants. The ability to directly refer patients to an established, highly experienced gynaecologist has proved to be of tremendous benefit to patients attending CDS. Continuity of care involving close liaison between diagnostic units and clinicians remains an essential ingredient in terms of high-quality patient management.

Contact the CDS for a consultation with Bill Smith on:
📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk

15/07/2026

More on Bill's background below, but to read interview in full:
https://www.clinicaldiagnostics.co.uk/about-cds/interview-with-bill-smith-founder-of-cds/

Following an initial experience in this field, I accepted an ultrasound post at King’s College Hospital with the world-leading expert Professor Stuart Campbell and trained with him. I chose this pathway as an alternative to entering medical school.

I returned to the Royal Free and was invited to take over as head of obstetric and gynaecological ultrasound services. From there was introduced to and became increasing involved in the world of infertility. I worked very closely supporting consultants dealing with first-line infertility problems. In addition I was part of the team to produce one of the first test tube babies worldwide.

I was very involved in introducing and promoting the utilisation of medical ultrasound in key areas of reproductive medicine and general gynaecology such as detection of uterine and ovarian tumours as well as endometriosis and miscarriage. During this time I was involved in developing transvaginal scanning. I am recognized worldwide for my pioneering work in establishing this technique as a crucial part of women’s healthcare generally.

Contact the CDS for a consultation with Bill Smith on:
📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk

08/07/2026

CDS offers what can be termed as “comprehensive” cycle monitoring.

Advanced transvaginal scanning can identify gynaecological problems which could make conception challenging as well as preventing normal development of early pregnancy.

To arrange a consultation in order to discuss cycle monitoring with Bill Smith contact the CDS team to schedule a convenient appointment and explain relevant costs.

📞 020 8732 3070
📧 [email protected]
🌐 www.clinicaldiagnostics.co.uk