Police believe a body found in woods is that of missing teacher Sarah Flooks.
Sarah Flooks had lived with her partner for 30 years
Officers said the body was uncovered by a conservationist in Wanstead Park, east London, on Thursday.
The body has not been formally identified but police think it is the teacher, who went missing on the day of an Ofsted inspection.
Ms Flooks, 50, was last seen walking close to her home in Wanstead, east London, soon after leaving for work in March 2006.
The police have informed the family of Ms Flooks after the discovery near the ornamental lakes in Wanstead Park, which is less than a mile from where she lived on Wanstead Park Road.
Her brother and sister travelled from Bridgwater, Somerset, to help in the search for her when she was first reported missing.
The Metropolitan Police spokesman said Wanstead Flats, which is just south of Wanstead Park, the southern stretch of Wanstead Park and the nearby City of London Cemetery were searched at the time of the disappearance.
But the exact area where the body was found had not been looked at, the spokesman said.
Ms Flooks left her home on 2 March saying she was going to work at Monega Primary School in nearby Forest Gate.
She had left a scribbled note for her partner saying she would ring later that day - a call she never made.
Less than an hour later she was seen by a former colleague walking in Aldersbrook Road, towards Manor Park.
Her car was found parked near the house she shared with John Mouzouros, her partner of 30 years.
On the day she disappeared, her school was to undergo an Ofsted test. The school later received a good to outstanding report in the inspection.
The body is still at the scene while forensic scientists examine the area and a post-mortem examination will take place next week.