Police are appealing for help to find missing 15-year-old Andrew, who was last spotted in the Paulsgrove area at approximately 6:45pm on Thursday, June 26.
Andrew was last seen wearing grey tracksuit bottoms and a Nike Tech jacket when he disappeared.
The teenager is known to visit Havant, Portsmouth and Southampton areas regularly and often uses trains to travel around the region.
Police have conducted extensive enquiries since Andrew was reported missing but are now seeking assistance from the public.
Anyone who has spotted Andrew since he went missing or believes they know his current whereabouts is urged to contact police immediately on 999, quoting reference number 44250282793.