Peter Watts died in London in mysterious circumstances in January 1976

On January 18th 1976, Peter Watts left a note for his parents at their home in north Wales saying he was going to help a friend with homework. Just hours later the 15 year old died in London hospital after being found collapsed in a street.

Now 40 years after his death, Met Police detectives are trying to trace witnesses in a bid to find out what happened to him. From investigations over the past four decades, this is what they know:

  • Peter was last seen at home in Colwyn bay at 4pm on Sunday January 18th 1976. He told his parents he wanted to finish his homework rather than going on a drive with them and his brother

  • A short while later the teen lest a brief note and then bought a ticket form Colwyn bay station to Chester. He is thought to have travelled on the 5.15pm Holyhead to London train, but instead of getting off at Chester he continued on to Euston arriving at around 9.15pm

  • Apart from the guard who sold Peter his train ticket, there were no further confirmed sightings of the 15 year old.

Police say that apart from the guard who sold Peter his train ticket, there were no further confirmed sightings of him. The 15 year old was found below a bridge at Euston Road underpass at around 1.30am on Monday January 19th by a passing taxi driver. He died an hour later in hospital.

A postmortem found Peter died as a result of head injuries consistent with a fall. There were no marks on his body to indicate he was pushed or had been involved in a struggle, nor was there evidence of sexual assault. Police say he was missing his watch and glasses, which have never been found.

The Met Police Special Casework Investigation Team is releasing details of the investigation in a bid to trace anyone who is yet to speak to officers about Peter's death.

Peter was around 5ft 11ins, with long brown hair and brown eyes. He was last seen wearing a long brown leather jacket, trousers and a roll-neck sweater.

Anyone with information is asked to contact 020 7230 7963, or Crimestoppers on 0800 555111.