A model pupil thought to have run away when he got bored of school is believed to have been spotted in East Sheen.

It is now 11 days since 14-year-old Andrew Gosden disappeared from his school in Doncaster, South Yorkshire.

But on Wednesday, he might have been spotted getting off a train from Waterloo at Mortlake.

It is thought he then walked up Sheen Lane and along Upper Richmond Road, ironically near the main office of the charity Missing People.

Described by his family as extremely bright, Andrew was expected to get 10 A* GCSEs.

The teenager's father Kevin, an NHS speech therapist, said his son may have left after getting bored with his school work.

He said: "Andrew is the kind of kid who would be happy spending a week in the South Kensington museums and not get bored. My gut feeling is he wanted to do something more interesting."

After he disappeared, it was discovered the schoolboy had withdrawn all his savings and bought a one-way ticket to London.

He is 5ft 4in, slim with collar-length, light brown hair and brown eyes. It is thought likely that he will be wearing black jeans, a black T-shirt, black trainers and carrying a black canvas satchel with patches of rock/metal bands on it.

If you have seen Andrew please call the confidential 24 hour charity Missing People on Freefone 0500 700 700 or email seensomeone@missingpeople.org.uk