Judy Murray has thanked fans on social media for their kind wishes after son Andy Murray and his girlfriend Kim Sears announced the birth of their new baby.

The British tennis star has yet to announce the name of his baby daughter, but his mother Judy says she is 'thrilled to bits' about becoming a grandmother.

Judy has also said she plans to take a step back from tennis to focus on being a new grandparent.

Last week, the 56-year-old told Hello magazine: "I'm really looking forward to the new baby, my first grandchild.

"When it happens I shall be an active granny. My mum Shirley was very involved with Jamie and Andy when they were growing up and I hope to be the same with my grandchild."