Zara and Mike Tindall 'thrilled' to be expecting their second child

Zara and Mike Tindall have revealed they're expecting a second child.

The couple, who already have a daughter Mia Grace, are said to be thrilled with the news.

Equestrian champion Zara, the Queen's granddaughter, and former England rugby player Tindall were married in 2011.

The new royal baby is due around late spring and will be the Queen and Duke of Edinburgh's sixth great-grandchild. They will also be 18th in line to the throne.

A palace spokesman said the members of the Royal Family were "delighted".

William, Kate and Harry are close to the couple and pay visits to their home in Gatcombe park country estate in Gloucestershire. Tindall once revealed that Mia's first meeting Prince George was "carnage", with most of the food ending up on the table.