Private clinics where women can freeze their eggs have begun offering a similar service to men who want to put fatherhood on ice.
Freezing eggs, which allows younger women to boost their chances of motherhood in later life, costs £8,000 on average.
The process combats the decline in egg quality – but experts say there is no need for the vast majority of men to freeze their sperm.
Its quality only drops slightly with age and older men can easily conceive children naturally.
A snapshot investigation by the Daily Mail discovered London clinics offering sperm-freezing.
Allan Pacey, professor of andrology at the University of Sheffield, said the process can be beneficial for men with conditions such as cancer, where treatment can harm fertility, or those in high-risk roles including in the military.
Men are being given the chance to freeze their sperm by clinics in London, a Daily Mail investigation has shown (file photo)
He added: ‘But for the remainder, I don’t see it has any real purpose. Once sperm has been frozen, it will almost certainly need to be used in an IVF