aubrey de grey , 51 , believes he will unlock secrets to huge advances in life .
the former harrow school and cambridge scholar is a biomedical theorist .
he has a hugely rich and influential following in calfornia 's silicon valley .
raised in chelsea , he inherited £ 11million when his mother passed away .
it 's been invested in his strategies for engineered negligible senescence .
the eccentric claims : ` aging is a disease that can and should be cured '