The Human Fertilisation and Embryology Authority said some private clinics were using 'selective success rates' to target older women.
A couple have had their second child using IVF thanks to the generosity of Facebook friends.
The number of adoptions has fallen in recent years to 4,350 in 2017, down from 5,360 in 2015.
Louise Brown was the first IVF baby to be born in 1978.
The parents died in 2013 but using frozen embryos, a surrogate mother gave birth to Tiantian four years later, The Beijing News reported.
Teenage cancer survivor Alannah Roberts had a baby 13 years after freezing her eggs.
It could mean one man may end up fathering 26 children to strangers.
Clinics have been given permission to apply to create the UK's first "three-parent baby" by the fertility regulator.
Despite clinical guidelines new figures have shown a decline in the number of IVF cycles couples are being offered on the NHS.
Rachael and Richard Best welcome arrival of newborn Isaac, who was born two years after his brother Oliver through IVF.