The former Brighton College student from Richmond in south-west London was "within hours of death" his mother, Claire Derry said.

BBC: Backpacker Sam Woodhead 'within hours of death'

Brighton College, in the town centre, has seen the number of 11-year-olds taking its entrance test rise by almost half.

ECONOMIST: Private education

Local authorities launched a hunt for the former Brighton College student, reported to be 18 and from Richmond, south-west London, amid fears he may have lost his way.

BBC: Backpacker Sam Woodhead missing in Australian outback