Steve Backshall and Helen Glover have become parents for the first time.

Steve Backshall and Helen Glover

Steve Backshall and Helen Glover

The 32-year-old rower - who is a double Olympic champion - has announced on her Instagram account that she's given birth to a boy, posting a black and white snap of Steve holding their baby's tiny foot in his hand.

She wrote: "Steve and I will are excited to welcome Baby Boy Backshall to the world, we promise to make it a great one for you little man @backshall.steve. (sic)"

The 45-year-old naturalist also shared the same snap of their baby boy.

He added the caption: "The biggest adventure begins @Helenglovergb. (sic)"

The couple have already been flooded with messages from well wishers, including from adventurer Ben Fogle, who responded with"huge congratulations".

Olympic cyclist and double gold medal winner Joanna Rowsell-Shand also responded to Steve's tweet, saying: "Congratulations to you both, the fun begins!"

The couple first announced that they were expecting twins in March, but a month later, Helen posted on social media that she had suffered a miscarriage and had lost one of their babies.

At the time, she told her followers: "Thanks for all your lovely messages.

"We've had the hard news that one baby hasn't made it but we are very excited and hopeful for the remaining baby to arrive this summer."