Since 1 July 2022, eggs, sperm and embryos can be stored in the UK for up to 55 years, provided storage consent is renewed every 10 years. Before this change, the standard storage limit was 10 years for most patients, which could force difficult decisions before someone was ready to use their frozen embryos. The reform was confirmed by the Human Fertilisation and Embryology Authority (HFEA), the UK regulator for fertility treatment, and applies to embryos frozen for both medical and social reasons.
The practical effect is that patients now have far greater flexibility over when to start or grow their family, whether they are delaying treatment, preserving fertility before medical treatment such as chemotherapy, or spacing out siblings. Storage over this length of time only works if cryogenic conditions remain stable, continuously, for years or decades without interruption. Any sustained rise in temperature can compromise stored embryos, so the reliability of the equipment matters as much as the law. This places real weight on the quality of the liquid nitrogen storage vessels and storage accessories a clinic depends on.
