Tom Daley and his husband Dustin Lance Black have announced they are to have a baby.

The couple marked Valentine's Day by sharing photographs of themselves holding up a snap from a baby scan.

Olympic diver Daley, 23, posted a picture on Instagram, telling his followers: "Happy Valentine's Day!"

His US filmmaker husband posted another image on Twitter, writing: "A very happy Valentine's Day from ours to yours."

A spokesman for the couple said: "Tom and Dustin are thrilled to share that they are expecting their first child in 2018."

The couple wed last year at an event with 120 guests.