Residents in Hillingdon are urged to keep a close eye out after a child - aged just seven - has gone missing.
The missing boy is described as black, 3ft tall, of a slim build and is wearing a white t-shirt, blue shorts and orange trainers.
Hillingdon Police put out an urgent appeal on their Facebook page on Wednesday evening (June 27) after the child disappeared.
In a post online, a spokesperson for the borough force wrote: "We are looking for a seven year old boy missing from The Larches in Hillingdon.
"He is a black Male, 3ft, slim build, white t shirt, blue shorts and orange trainers."
UPDATE as of 7.05pm on Wednesday (June 27):