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Pregnancy Appointments · Book Online

Book Your Baby Dating Scan

Choose your appointment time below. Same-day and next-day slots are often available. Confirmation is sent immediately by email.

CQC Registered No GP Referral Printed Photos Included Same-Day Available

Secure online booking · Instant email confirmation · Free cancellation up to 24 hours

Before You Arrive

How to Prepare for Your Dating Scan

Transabdominal scan — full bladder needed

Drink 3–4 glasses of water approximately 1 hour before your appointment. A comfortably full bladder acts as an acoustic window, lifting the uterus into a better position for imaging and improving image quality significantly.

If a transvaginal scan is needed

If the transabdominal images are unclear — which can happen at earlier gestations or with a retroverted uterus — your sonographer may offer a transvaginal scan. This requires an empty bladder and provides a clearer image at 8–10 weeks. No extra charge applies.

Preparation checklist

  • Drink 3–4 glasses of water 1 hour before your appointment
  • Wear comfortable, two-piece clothing (you will need to lower your waistband slightly)
  • Bring your last menstrual period (LMP) date or embryo transfer date (IVF)
  • Bring any previous scan reports or images
  • Bring your booking confirmation email
  • Arrive 10 minutes before your appointment time
  • Your partner or a support person is welcome to attend
Baby Dating Ultrasound-Scan
£235
All-inclusive · No hidden fees
  • Baby's heartbeat confirmed on screen
  • Estimated due date (EDD) via CRL
  • Number of babies confirmed
  • Printed photos to take home
  • Immediate verbal findings

Gestation guide

Gestation Approach Bladder
6–8 weeks Often transvaginal Empty
8–10 weeks Trans-abdominal / TV Full
10–14 weeks Transabdominal Full
Step 1 of 4

Choose Your Appointment Time

Baby Dating Scan — Online Booking
29 Weymouth Street, Marylebone, London W1G 7DB

The Dating Ultrasound Scan

The dating pregnancy ultrasound scan is being used to detect the gestation age of the baby, something very useful for women who are uncertain of their last period or have irregular menstrual cycles and therefore making it difficult for their doctor to correctly estimate when the baby is due.

This pregnancy scan also is known as viability scan can provide the very much needed reassurance that the pregnancy is progressing normally and it is not ectopic.

Unfortunately, dating pregnancy scans are not routinely offered in the NHS and our expectant mothers choose to have their ultrasound scan with us for peace of mind

Reasons for having a dating ultrasound scan:

  • Irregular periods
  • Uncertain of your pregnancy dates
  • History of ectopic pregnancy
  • General reassurance

 

‎£ 235 20 min.
  •  Available
  •  Partially Available
  •  Fully Occupied
  •  Selected
  •  Closed

Booking checklist

  • You are between 8 and 14 weeks pregnant
  • You have your LMP or embryo transfer date to hand
  • You can attend at 29 Weymouth Street, Marylebone
  • You have 20–30 minutes available for the appointment
  • Your partner is welcome to attend — let us know when booking
Need a same-day appointment?

Same-day slots are often available, particularly for urgent cases such as bleeding or pain. Call us directly on 020 3633 4902 and we will do our best to accommodate you today.

Cancellation policy

Free cancellation or rescheduling up to 24 hours before your appointment. Cancellations within 24 hours may incur a fee. Contact us on 020 3633 4902 or info@sonoworld.co.uk.

After Booking

What Happens After You Book

1

Confirmation email

You will receive an immediate email confirmation with your appointment date, time, and preparation instructions. Check your junk folder if it does not arrive within a few minutes.

2

Prepare for your appointment

Drink 3–4 glasses of water 1 hour before your appointment. Wear comfortable, two-piece clothing. Bring your LMP date or embryo transfer date and any previous scan reports.

3

Arrive at our clinic

Arrive at 29 Weymouth Street 10 minutes before your appointment. Our reception team will greet you. Your partner is welcome in the waiting area and scan room.

4

Your dating scan (20–30 min)

Your HCPC-registered sonographer takes a brief history, then performs the scan. You will see your baby's heartbeat on screen, receive your estimated due date, and get printed photos to take home.

5

Immediate results

Findings are discussed straight away. You receive your EDD based on CRL measurement, printed photos, and a verbal explanation of everything seen. A written report is available on request for your GP or midwife.

6

Next steps guidance

You receive guidance on your next scan — the NHS 12-week anomaly scan, a gender scan from 16 weeks, or a follow-up if any concerns were identified. We are available by phone or email for any questions after your appointment.

FAQs

Booking Questions Answered

Do I need a GP referral to book a dating scan?
No GP referral is required. You can book directly online or by calling 020 3633 4902. A dating scan is a self-referral service available to any expectant mother between 8 and 14 weeks of pregnancy.
What is the earliest gestation I can book a dating scan?
The dating scan is most accurate from 8 weeks of pregnancy. Before 8 weeks, the fetal pole may be too small for reliable CRL measurement. If you are earlier than 8 weeks and have symptoms such as bleeding or pain, an early pregnancy scan (available from 6 weeks) may be more appropriate.
Can I get a same-day appointment?
Same-day and next-day appointments are often available, particularly for urgent cases. If you cannot find a suitable slot online, call us on 020 3633 4902 and we will do our best to accommodate you on the same day.
What is included in the £235 price?
The £235 price is all-inclusive and covers: a 20–30 minute appointment with an HCPC-registered sonographer, CRL measurement and EDD calculation, heartbeat check and viability confirmation, number of babies confirmed, printed photos to take home, immediate verbal findings, and a transvaginal probe if required (no extra charge). A written report is available on request.
Do I need a full bladder for the scan?
Yes, for a transabdominal scan a comfortably full bladder is recommended. Drink 3–4 glasses of water approximately 1 hour before your appointment. If the transabdominal images are unclear, a transvaginal scan may be offered, which requires an empty bladder. Your sonographer will advise on the day.
Can I bring my partner or a support person?
Yes. Your partner or a support person is welcome to attend and watch the scan on the second screen in the room. Please mention this when booking so we can ensure the room is set up for two people.
How do I cancel or reschedule my appointment?
Cancellations and rescheduling are free up to 24 hours before your appointment. Contact us on 020 3633 4902 or info@sonoworld.co.uk. Cancellations within 24 hours may incur a fee.
What if no heartbeat is found?
If no heartbeat is detected, your sonographer will explain the findings sensitively and clearly. In some cases, a repeat scan in 7–10 days is recommended before any conclusions are drawn, particularly at earlier gestations. If an urgent NHS referral is needed, we will provide you with a written report to take to your GP or Early Pregnancy Unit.
Our Clinic

Sonoworld — Marylebone, London

CQC-registered private diagnostic ultrasound clinic in central London. A short walk from Regent Street, Oxford Circus, and Regent's Park tube station.

Address & contact

29 Weymouth Street, Marylebone, London W1G 7DB

Nearest tube: Regent's Park (Bakerloo) · Great Portland Street (Circle / Metropolitan / Hammersmith & City)

Opening hours

Monday – Friday08:00 – 20:00
Saturday09:00 – 17:00
Sunday10:00 – 16:00
Related Pregnancy Scans

Other Pregnancy Appointments

Early Pregnancy Scan
From 6 weeks · Heartbeat & viability check
Book →
Gender Scan
16+ weeks · Find out boy or girl
Book →
Growth Scan
24+ weeks · Baby size, position & placenta
Book →
About the Dating Scan
Full clinical information & what to expect
Learn more →

Ready to see your baby's heartbeat?

8–14 weeks · 20–30 minute appointment · Printed photos included · £235 all-inclusive

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