Madeleine McCann’s parents have paid a tribute to her on her 15th birthday saying they will “never give up.”

On the official Find Maddie Facebook page  Kate and Gerry McCann wrote: “Happy 15th birthday Madeleine!”

Attached to the post was a smiling photo of the missing child, taken days before she went missing in 2007.

They are celebrating her birthday with a “low key” party at home, with family and their twins, 13-year-old Sean and Amelie.

Maddie has never been found and although many people have their suspicions regarding what happened nothing has been proven.