IVF Treatment in London

In vitro fertilisation (IVF) remains the most established and effective assisted conception treatment available, and at Aria Fertility, it is at the heart of what we do.

Our clinic in Marylebone was founded and is led by fertility specialists with decades of combined experience. We create personalised IVF plans that are shaped around your fertility needs and your goals.

Whether you have been trying to conceive for some time, have been referred following investigations, or are simply ready to begin your journey, we are here to guide you with honesty, expertise and real care.

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Our Guide to IVF

What is IVF? Am I suitable? The process Why choose Aria IVF pricing IVF FAQs Book your consultation

Dr Amanda Tozer discusses IVF at Aria Fertility

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What is IVF?

IVF is a process in which eggs are collected from the ovaries, fertilised with sperm in our laboratory, and the resulting embryo is transferred back into the uterus to implant and develop. The process from starting medication to embryo transfer typically takes three to four weeks.

First developed over 40 years ago, IVF has helped millions of people worldwide to build their families. At Aria, we combine the foundations of this well-proven treatment with the very latest advances in embryology – including AI-assisted embryo selection – to give you the best possible chance of success.

If you are unsure whether IVF is right for you, your first step is a consultation with one of our fertility experts, who will review your history and investigations and advise you honestly on the most appropriate path.

Who is IVF suitable for?

IVF is recommended for a wide range of fertility challenges, including:

Women with blocked, damaged or absent fallopian tubes
Women with endometriosis
Women experiencing ovulation problems, including PCOS
Men with poor quality sperm in terms of low sperm count or sperm with abnormal shape or motility
Couples with unexplained infertility
Those using donor eggs, donor sperm or a surrogate
Those for whom other fertility treatments have not been successful

Your IVF journey at Aria: step by step

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Initial consultation

You will meet with one of our experienced fertility consultants to discuss your history, any investigations already carried out and your treatment options. If further tests are needed – such as an AMH blood test, an ultrasound scan, or a semen analysis – these can often be arranged at the same time. As an HFEA-licensed clinic, we will also perform a Welfare of the Child (WOC) assessment prior to IVF treatment.

Pre-treatment investigations

Before treatment begins, both partners will need certain screening tests, including infectious disease screening. These are regulatory requirements and help us ensure your treatment plan is as safe and effective as possible.

Ovarian stimulation

You will take hormone injections for approximately 10–14 days to encourage your ovaries to produce multiple eggs. We monitor your progress closely with ultrasound scans – typically two to three during this phase – and adjust medication if needed. When your follicles have reached the right size, a trigger injection is given to prepare the eggs for collection.

Egg collection

Eggs are retrieved from the follicles using a fine needle guided by ultrasound. The procedure is performed under intravenous sedation by our anaesthetist, so you will feel no pain. It usually takes around 15–20 minutes, and most patients are ready to go home within an hour.

Fertilisation

The eggs and sperm are then mixed in the laboratory in carefully controlled conditions. If the sperm quality is low, a procedure known as ICSI is necessary; the sperm will be microinjected into each mature egg at this time. It takes twenty-four hours to find out if the eggs have been fertilised.

Embryo development

Fertilised eggs develop into embryos in our state-of-the-art laboratory, monitored using time-lapse imaging technology. At Aria, we aim to culture all embryos to the blastocyst stage – day 5 of development – where the evidence for transfer is strongest. In 2025, 68.6% of our patients reached a day 5 transfer.

Embryo transfer

The best embryo is selected for transfer back into your uterus in a straightforward procedure similar to a cervical smear. It takes just a few minutes and is generally painless.

Pregnancy test

A pregnancy test is performed 10 to 12 days after embryo transfer. Whatever the result, your care team will be available to support you and discuss the next steps.

Why choose Aria for IVF?

Aria was founded by fertility professionals, which means every decision is driven by what is best for patients. You will have a dedicated consultant overseeing your care, supported by our team of highly experienced embryologists and nurses, to ensure you receive personalised, compassionate care.

Our laboratory was one of the first in the UK to use AI-assisted embryo selection, and our single-embryo transfer rate and multiple-pregnancy rate (currently 3.7%) reflect our commitment to safe, evidence-based care. We are regulated by the Human Fertilisation and Embryology Authority (HFEA) and publish our results transparently.

Our Marylebone clinic offers a calm, unhurried environment and personalised support from the first appointment to the final outcome.

How much does IVF cost at Aria?

IVF is a significant financial commitment, and we believe in being transparent about what that means from the outset.

Costs vary depending on your individual treatment plan, the investigations required, and whether additional procedures such as ICSI, embryo freezing, or genetic testing are recommended. When comparing prices between clinics, it’s worth ensuring you have a full breakdown of all components – consultation fees, monitoring scans, medication, and laboratory costs can vary considerably and are not always included in headline figures.

At Aria, we will discuss the expected costs during your initial consultation and provide you with a fully costed treatment plan before we start, so there are no surprises along the way.

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IVF FAQs

The questions below are intended to give you a clear and honest overview. For advice specific to your situation, we always recommend booking a consultation with one of our team.

What is IVF and how does it work?

IVF (in vitro fertilisation) is a fertility treatment in which eggs are collected from the ovaries, fertilised with sperm in a laboratory, and the resulting embryo is transferred back into the uterus. The full process, from starting medication to embryo transfer, takes around three to four weeks.

Am I suitable for IVF?

IVF is suitable for a wide range of people, including those with tubal damage, endometriosis, PCOS, unexplained infertility, or male factor fertility issues. It is also the treatment used for those requiring donor eggs, donor sperm or surrogacy. The best way to know whether IVF is right for you is to have a consultation with one of our specialists, who will review your individual circumstances.

How long does an IVF cycle take?

From starting your stimulation injections to embryo transfer, a fresh IVF cycle typically takes three to four weeks. Add in your initial consultation, pre-treatment tests and the two-week wait after transfer, and the full process from first appointment to pregnancy test is usually around six to eight weeks.

How many eggs do I need for IVF to work?

There is no definitive number. More eggs generally give more embryos to work with, but successful pregnancies have been achieved from a single egg. Your consultant will discuss what to expect based on your ovarian reserve and age.

What is the difference between IVF and ICSI?

In standard IVF, eggs and sperm are mixed in the laboratory, and fertilisation occurs naturally. In ICSI, a single sperm is injected directly into each mature egg under a microscope. ICSI is recommended when there are concerns about sperm quality, when previous IVF cycles have had poor fertilisation, or in certain other clinical situations. At Aria, ICSI is offered as an additional element of your IVF treatment where clinically appropriate.

What is blastocyst transfer, and why does it matter?

A blastocyst is an embryo that has developed to day 5. Transferring at this stage allows embryologists to identify the most viable embryos and aligns more naturally with the point at which a naturally fertilised embryo would reach the uterus. At Aria, 95.7% of patients reached a day 5 transfer in 2021. Blastocyst culture is included in our standard approach.

How successful is IVF at Aria?

Success rates vary depending on age, diagnosis and individual circumstances. We publish our results in full on our website and are transparent about how they are calculated. Our team will give you an honest, personalised assessment of your likely success rate during your consultation – we will never over-promise.

How many IVF cycles will I need?

Many patients conceive in their first cycle, but others require more than one attempt. If embryos are frozen following your cycle, a frozen embryo transfer is significantly less expensive and physically less demanding than repeating a full stimulation cycle. Your consultant will discuss the likelihood of needing further cycles and help you plan accordingly.

Can I do IVF over 40?

Yes. Many of our patients are over 40, and our team has extensive experience in this area. Success rates do decline with age, and we will be honest with you about what that means in your specific situation. For women over 40, we may recommend additional investigations such as PGT-A (preimplantation genetic testing) to help identify the most viable embryos.

Can single women and same-sex couples have IVF at Aria?

Absolutely. We welcome patients of all family structures. We offer IVF with donor sperm for single women and lesbian couples, and shared motherhood IVF (reciprocal IVF) for female couples who want both partners to be involved in the process. Our team will guide you through the legal and clinical aspects at your consultation.

What happens to unused embryos?

Any good-quality embryos not used in a fresh transfer can be frozen and stored for future use. Frozen embryo transfer is a less intensive treatment, and the chances of getting pregnant with a fresh or frozen embryo are about the same. In fact, some studies indicate better success with frozen embryo transfer. You will be asked about your preferences for unused embryos as part of the storage consent process.

Does IVF hurt?

The daily stimulation injections can cause mild bruising or tenderness. Egg collection is performed under intravenous sedation, so you will not feel pain during the procedure itself, though some patients experience cramping or bloating for a day or two afterwards. Embryo transfer is generally painless and is often described as similar to having a cervical smear.

What is ovarian hyperstimulation syndrome (OHSS)?

OHSS is an over-response to the stimulation medication, causing the ovaries to become swollen and uncomfortable. Mild symptoms are relatively common and resolve on their own. Severe OHSS is rare. At Aria, we monitor you closely throughout stimulation and will adjust your medication or recommend a freeze-all cycle if we have any concerns about your response.

Can I work during IVF treatment?

Most patients continue to work throughout an IVF cycle. You will need to attend the clinic for monitoring scans during stimulation (usually two to three appointments), and for egg collection, you will need the day off and should not drive. Many patients take a day or two around egg collection to rest, but this is a personal choice.

Where is Aria Fertility?

We are located at 8 Welbeck Way, Marylebone, London W1G 9YL – a short walk from Bond Street Underground station. The clinic is deliberately discreet and calm, situated in a quiet mews in the heart of London’s medical district.

Your next step

When you are ready and the time is right for you, the next step is to contact us, and we will help you arrange a face-to-face, telephone or video-call introduction with one of our consultants.

You can do this by filling in the contact form below or by calling one of our friendly team members on +44 (0) 203 263 6025.

We really look forward to getting to know you and helping guide you toward your next steps toward your dream family.