A reassurance ultrasound is a private pregnancy scan you can book from around 6 weeks to check your baby’s heartbeat, growth or position and ease your mind between routine NHS appointments.
Hear the summary of the text below from the following voice:
| Your situation | Recommended scan | Quick rule |
|---|---|---|
| Bleeding, cramping or anxiety before 10 weeks | Early reassurance scan (6–10 weeks) | Confirms heartbeat, location and viability; a full bladder helps early imaging |
| Previous miscarriage, ectopic pregnancy or fertility treatment | Reassurance scan from 6 weeks | Book as soon as you feel you need it — no GP referral required |
| Wanting extra peace of mind between NHS scans | Reassurance scan, 11–27 weeks | Checks growth and heartbeat; gender can usually be confirmed from ~16 weeks |
| Suspected twins or uncertain dates | Reassurance scan from 6 weeks | Confirms number of babies and a more accurate gestational age |
| Late-pregnancy concerns (growth, position, fluid) | Late reassurance scan (28+ weeks) | Checks presentation, growth and amniotic fluid |
Please note: a reassurance scan is there to ease your mind between routine appointments — it doesn’t replace your official NHS dating or anomaly scan and it isn’t a full diagnostic assessment. Any unexpected finding is referred straight to your NHS team or a specialist rather than diagnosed here in full.
Definition
A reassurance ultrasound is a private pregnancy scan carried out at almost any stage to check your baby’s wellbeing and give you peace of mind. Routine NHS care already includes a 12-week dating scan and a 20-week anomaly scan, but a reassurance scan sits alongside these — it’s an additional check you choose for yourself, whether that’s confirming a heartbeat a week after a positive test or having one last look before your due date. It doesn’t replace your NHS antenatal schedule; it simply fills the gaps in it.
When and Why We Use Reassurance Ultrasound
Expectant parents book a reassurance scan for all sorts of reasons — some medical, some simply emotional. Both are valid reasons to come in.
| Indication | Typical timing | What we check |
|---|---|---|
| General anxiety or wanting a check-in between NHS scans | Any stage | Heartbeat, growth, general wellbeing |
| History of miscarriage, ectopic pregnancy or fertility treatment | From 6 weeks | Location, viability, heartbeat |
| Light bleeding, spotting or abdominal cramps | 6–12 weeks | Confirms the pregnancy is progressing normally |
| Uncertain dates or suspected multiple pregnancy | 6–10 weeks | Gestational age, number of embryos |
| Late-pregnancy concerns | 28+ weeks | Growth, presentation, amniotic fluid, placenta position |
Whatever brings you in, the scan is built around your specific concern rather than a fixed checklist, so the sonographer will spend time on the question that matters to you.
What the Scan Includes
What’s assessed depends mainly on how far along you are, since the baby — and the best way to image it — changes a great deal over pregnancy.
| Gestation | Probe used | What’s assessed | Typical duration |
|---|---|---|---|
| 6–9 weeks | Transvaginal (sometimes transabdominal) | Heartbeat, number of embryos, location, gestational age | 10–20 minutes |
| 10–13 weeks | Transabdominal | Heartbeat, early growth, basic anatomy | 15–25 minutes |
| 14–27 weeks | Transabdominal | Growth, heartbeat, anatomy check, gender if requested | 20–30 minutes |
| 28+ weeks | Transabdominal | Growth, presentation, amniotic fluid, placenta position | 20–30 minutes |
For early scans, a full bladder often improves the image, so you may be asked to drink water beforehand. An early estimate of gestational age is a useful guide, but your official due date is only confirmed at the NHS 12-week dating scan. Most clinics send you home with printed or digital images, sometimes a short video clip, and a written scan report you can pass on to your midwife or GP.
What to Expect on the Day
You’ll check in and have a short chat about your medical history and the reason for your visit, so the sonographer understands exactly what you’d like checked. The scan itself is non-invasive: you’ll lie on a couch while a probe is moved gently over your abdomen (or, in early pregnancy, sometimes internally, which can feel slightly uncomfortable but shouldn’t hurt). You’ll usually see the live images on screen and, depending on gestation, hear the heartbeat. Afterwards the sonographer or consultant talks you through what they’ve found, and a detailed report typically follows the same day or within a few hours. If anything needs a closer look, you’ll be given clear guidance on next steps — and a reminder that this scan sits alongside your NHS care rather than replacing it.
Who Performs the Scan & Equipment Used
Every scan should be carried out by an HCPC-registered sonographer or a consultant radiologist or obstetrician — never by unqualified staff, whatever the clinic’s marketing implies. Look for clinics using well-maintained 2D (and where relevant 3D/4D) ultrasound equipment, serviced and calibrated to clinical standards. Doppler is available but used only where there’s a clear clinical reason for it — current safety guidance recommends caution with Doppler in the first trimester, so it isn’t switched on routinely just to let you hear the heartbeat. Operators follow current regulatory and safety guidance rather than pushing settings for a “nicer” image.
Conditions Detected / Diagnostic Value
A reassurance scan isn’t a full anomaly scan, but it can still pick up a meaningful amount of clinically useful information.
| Finding | Why it matters |
|---|---|
| Fetal heartbeat and viability | Confirms the pregnancy is progressing |
| Number of embryos and chorionicity | Identifies twin or triplet pregnancies and how they share membranes |
| Location of the pregnancy | Distinguishes an intrauterine pregnancy from an ectopic one |
| Growth, fluid and placenta position (later stages) | Flags growth restriction, low fluid or a low-lying placenta for referral |
| Presentation (breech or head-down) | Helps you and your midwife plan for delivery |
Anything unexpected is flagged for referral to your NHS team or a specialist — a reassurance scan’s job is to catch a reason for concern early, not to diagnose it in full.
Safety and Limitations
Ultrasound uses sound waves rather than radiation, and decades of clinical use have found no evidence of harm to mother or baby when it’s performed correctly. According to the British Medical Ultrasound Society:
“There is no evidence that diagnostic ultrasound has ever produced any harm…”
— provided it’s used for a genuine clinical purpose, by a properly trained operator, following the ALARA (as low as reasonably achievable) principle. That said, image quality has real limits: maternal BMI, fetal position, gestational age and bowel gas can all reduce how much detail is visible, and a short reassurance scan can’t fully assess every anatomical structure. It’s also worth being clear-eyed that a reassurance scan is not a substitute for your structured NHS dating or anomaly scan, and any clinic offering one shouldn’t claim otherwise — it’s reasonable to ask about a sonographer’s credentials before you book.
Pricing & Booking
| Scan type | Typical London price | Notes |
|---|---|---|
| Early reassurance scan (6–10 weeks) | From around £75 | May be performed transvaginally |
| Mid-pregnancy reassurance scan (11–27 weeks) | ~£99–£150 | Growth and heartbeat check; gender available from ~16 weeks |
| Late-pregnancy reassurance scan (28+ weeks) | ~£150–£200+ | Growth, presentation and fluid check |
| Twin or multiple pregnancy | Additional charge applies | Confirm the exact price at time of booking |
Booking is self-referral — no GP or midwife letter needed — and can usually be done online or by phone, with same-day or next-day appointments often available.
Locations
| Location | Area served | Access |
|---|---|---|
| Holborn, Central London | Central and West London | Close to Holborn and Chancery Lane underground stations |
| Banstead, Surrey | South London and Surrey | On-site parking, near Banstead rail station |
Both locations offer flexible scheduling, including evening and weekend slots, so a scan can usually fit around work or childcare rather than the other way round.
Our Clinicians & Specialist Team
Scans are carried out by sonographers and radiologists with NHS backgrounds and specialist obstetric or fetal medicine experience. Every scan is overseen by a senior clinician who can escalate a finding immediately if needed, rather than leaving you waiting for a second opinion. Look for HCPC registration and CASE accreditation, plus evidence of ongoing training in current fetal imaging standards — these are the credentials worth asking about before you book anywhere.
Patient Experience
Reassurance scans are usually one-to-one, with time for questions rather than a rushed ten-minute slot. You’ll normally get verbal feedback the same day, digital images to take home, and the option to bring a partner in. A printed or digital report follows shortly after — keep a copy and pass it to your midwife or GP, since how quickly it reaches your NHS notes depends on your local maternity team’s process. Done well, a reassurance scan complements your routine antenatal care rather than adding stress on top of it.
References & Governance
A reputable reassurance ultrasound service is regulated by the Care Quality Commission (CQC), with sonographers under HCPC registration and imaging practice following British Medical Ultrasound Society (BMUS) safety guidance, full medical indemnity insurance, and a clear escalation pathway into NHS or consultant care for anything unexpected. Above all, the provider should be upfront that this is a reassurance and wellbeing check, not a replacement for your full diagnostic NHS scans.
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