Police are urgently searching for Troy Grayston, who is missing from St Leonards.
The eight-year-old was last seen leaving his house at about 8.30am on Monday (26 February), however he failed to turn up to school.
Troy, pictured, has brown hair with a bright red tint at the front. He was last seen wearing a yellow jacket and black trousers.
Officers and his family are extremely concerned for Troy due to his age and the cold weather conditions.
Anyone who sees him is asked to call 999 immediately, quoting serial 389 of 26/02.