The search is on for a 12 year old boy who has gone missing this afternoon.

Harry Collins was last seen at his home in the southwest of Radlett just before 4pm this afternoon.

He is described as white with dark brown hair and was wearing blue tracksuit bottoms and a navy T-shirt.

When he went missing he was riding an orange bike and it is thought he may be making his way to Luton or Paddington in London.

Harry is vulnerable and police are growing increasingly concerned for his welfare.

Anyone who has seen Harry or knows where he is should call 101 quoting ISR 468 of November 7.