Storage limits for eggs, sperm and embryos would be increased to a maximum of 55 years under British Government plans to give people greater choice over when to start a family.
Under the proposals announced by Health Secretary Sajid Javid on Monday, prospective parents would be given the option to keep or dispose of frozen reproductive cells or embryos at 10-year intervals.
The existing storage limit is 10 years.
Doctors had argued that the current limit after which prospective parents must decide whether to undergo fertility treatment or have the cells destroyed was too restrictive.
Research from the Royal College of Obstetricians has suggested that frozen eggs can be stored indefinitely without deterioration, thanks to a modern freezing technique.
Health Secretary Sajid Javid said: “The current storage arrangements can be severely restrictive for those making the important decision about when to start a family, and this new legislation will help turn off the ticking clock in the back of people’s minds.
“Technological breakthroughs including in egg freezing have changed the equation in recent years and it’s only right that this progress puts more power into the hands of potential parents.
“By making these changes, we are going to take a huge step forwards not just for giving people greater freedom over their fertilities, but for equality too.’’
The proposals, which followed a public consultation launched last year, would need approval by Parliament.
Additional conditions would apply around third party donors and posthumous use, with the health department saying it would be “inappropriate’’ for the limit to apply in all cases.
British Fertility Society chair Dr Raj Mathur welcomed the plans.
“This change ensures that UK regulation is compliant with the scientific evidence about the safety of storage, and protects the ability of all our patients to make reproductive choices for themselves as individuals and couples,’’ he said.