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Our services are open and safe to attend – we are still here to help during lockdown

Assisted Conception Unit (ACU)

A range of treatment options to help you achieve success

Coronavirus: Assisted Conception Unit update

In response to the coronavirus (COVID-19) outbreak, please read our advice and information before attending the service.

About us

Established in 1991, the Assisted Conception Unit at Guy's and St Thomas' has developed a reputation for excellence in both NHS and private fertility treatment. 

We are one of the leading innovators in the field of fertility and a trusted choice for people trying to conceive.

The unit is located on the 11th floor at Guy's Hospital and has recently been refurbished with state-of-the-art facilities. We have dedicated labs, theatres, and procedure rooms, all designed to be a contemporary and calming space.

Featured on the BBC and other television channels, our fertility treatments and services are led by world renowned clinicians.

You will be treated by a team of experts who are constantly researching and innovating the field of fertility and in particular IVF. The techniques that we have developed have been implemented by clinics around the country. At the Assisted Conception Unit at Guy's and St Thomas' you will be able to access treatments by the people who developed them.

We are also the largest and most successful clinic in the UK for pre-implantation genetic diagnosis (PGD) and are licensed to carry out stem cell research.

We are proud to say that our commitment to pioneering research and the expertise of our clinicians has given us good success rates, helping to increase your chances of conception.

Please see our frequently asked questions page for answers to common queries we have been receiving.

Laboratory annual maintenance

Our laboratory is closing for annual maintenance over the Christmas period in 2020/21.

This means that:

  • If you are starting a long cycle of in-vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI), you will not be able to start from Friday 30 October to Saturday 28 November.
  • If you are starting a short cycle of IVF or ICSI, you will not be able to start from Monday 30 November to Monday 28 December.
  • If you are having intrauterine insemination (IUI), frozen embryo transfer (FET) natural or FET tablets, you will not be able to start from Sunday 29 November to Tuesday 29 December. For natural FET surge, the latest start date is Monday 14 December.
  • For a medicated frozen cycle, you will not be able to start from Friday 30 October to Monday 28 December.




Please visit the main Trust coronavirus (COVID-19) page for more information.


General enquiries
Tel: 020 7188 2300

Other Assisted Conception Unit contact details for more specific enquiries

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