BBC children's television presenter Mark Speight has been reported missing, two months after his fiancee was found dead in the bath at their London home, police said.

Speight, 42, from Enfield, was last seen at 9:30 a.m. yesterday at Wood Green station in north London. He was due to meet a friend in Covent Garden later that day, but did not arrive.

"Police and Mark's friends and family are concerned for his welfare," Scotland Yard said in a statement. It described him as a "vulnerable missing person".

Speight, who hosts the art show "SMart", was questioned by police over the death of Natasha Collins, 31, at their St John's Wood home in January.

Westminster Coroner Paul Knapman recorded a verdict of death by misadventure at an inquest last week. The court heard that Collins died in a scalding hot bath after taking cocaine and sleeping pills and drinking vodka.

Speight was briefly held on suspicion of her murder before detectives "cancelled" his arrest and said he was not a suspect.

A statement released by his lawyers at the time of Collins' death, said Speight was "absolutely distraught". The couple appeared together in the BBC children's programme "See It Saw It".Speight also appeared on the BBC's religious show "Heaven and Earth", as well as on ITV's "This Morning".

He was last seen wearing a brown suit jacket, dark jeans and a brown flat cap. He is 6 ft (1.8 metres) tall, slim, with blonde hair and blue eyes.