Photos from the scene in Hampshire show the wreckage of the double decker bus.
The 52-year-old was last seen setting off jogging from his home in Hampshire in May.
James Nash, who also served as a parish councillor, was described as a "kind-hearted individual" who "cared deeply for his community.”
A farm shop owner in east Hampshire has been delivering food parcels to key workers. He was inspired by an NHS nurse’s emotional plea for people to stop panic buying and leaving shop shelves empty. William Benson, who owns Applegarth Farm in Grayshot, has since helped to raise £3,000 for front-line NHS staff and care-home workers and delivered dozens of food packages since lockdown began in March.
Detectives said a review of new evidence will be undertaken.
The 54-year-old was researching dementia and Parkinson's disease.