Police investigating the discovery of a human leg in a lake have now recovered a whole body and believe them to belong to a missing 39-year-old man.
A complete body was removed from White Hart Lakes in Dagenham and detectives said they are confident the parts belong to Neil Buchel.
The severed leg was originally found by a member of the public on Wednesday.
Mr Buchel had not been seen since March 13 and police had described his disappearance as "out of character".
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In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.