Michaela Strachan has become a grandmother, aged 59, and shared the adorable news with her followers on social media. Taking to Instagram, sharing a snap of her stepson, Tom, and his new baby, Huxley, she wrote: "Today I became a Granny!!After an extremely stressful and exhausting labour, 55hrs, baby Huxley finally arrived!!

"So proud of my future daughter in law @finalfinal.jpeg & my step son @tchev3000 Proud new parents. Me and granny @jackyhumphries were a wee bit emotional. Welcome to the world baby Huxley. So, so precious."

Replying to the post, which also included snaps of Huxley's proud mum along with his grandmas, Michaela's fans congratulated the Springwatch star on her happy news.

Tom's dad, director and cameraman, Nick Chevallier, met Michaela in Cape Town in 2003.

In 2006, the couple were overjoyed to welcome their son Ollie, after fears that widower Nick, who already had three children of his own, wouldn't want to become a dad for the fourth time.

Confessing her apprehension during an interview with The Times, Michaela said: "When I got together with Nick, I thought he might feel he didn't want a fourth child of his own. But it all worked out. He adores Ollie."