An 11-year-old girl from the UK is believed to be the youngest-ever to give birth with her family not aware of the pregnancy, according to reports.

The child, who was 10 when she became pregnant, gave birth earlier June. Both mother and baby are in good health.

Social services are investigating the pregnancy and speaking to the new mother's family who were unaware of the pregnancy.

Notably, a source told The Sun, “It has come as a big shock. She’s now being surrounded by expert help. The main thing is that she and the baby are OK."

“There are questions around why people did not know. That is very worrying.”

Before her, the previous youngest mother in the UK is believed to be Tressa Middleton who gave birth in 2006 at the age of 12.

However, Middleton was forced to give her baby up after confessing the child's dad was her brother, who raped her.

The record for youngest parents was a father aged 13 and mother, aged 12, when they had a child in 2014.

Also, there was a reported case in 2017 of another girl in the UK giving birth aged 11 but no further details emerged.

The youngest mum in the world was a Peruvian girl called Lina Medina who was around five years old and gave birth in 1939.

Her parents thought she had a tumor but when she was taken to hospital, she was found to be seven months pregnant.