Family of missing Katrice marching to Downing Street

Katrice Lee went missing in Germany in 1979 Credit: Katrice Lee's family

The family of a girl who went missing more than 31 years ago are marching to Downing Street today to raise awareness of her case.

Katrice Lee was last seen in a supermarket in Paderborn, Germany on 28 November 1979. She was aged two at the time.

Today would have been her 33rd birthday.