Detectives have outlined what they have described as one of the "most complex search operations" in recent times after Alice Gross was reported missing on August 28.
Police said all lines of possible evidence were pursued until the body of Latvian builder Arnis Zalkalnwas found in a "densely overgrown overgrown" area.
A systematic search had been conducted of 25 square kilometres of canals, rivers and land.
The densely overgrown area where Arnis Zalkalns was discovered was one of these areas. This area had not been searched by police previously.
Officers said that recovery of the body required a "substantial removal of forestry" to enable access for forensic teams, before it was removed shortly after 10am on Sunday.
Police previously searched the area where the decomposed body, thought to be that of Alice Gross murder suspect Arnis Zalkalns, was found.
A body thought to be Alice Gross murder suspect Arnis Zalkalns was badly decomposed and could have been in a west London park for a month.
The ex-mother-in-law of a suspect sought over the murder of West London teenager Alice Gross has spoken to ITV News.