Evidence · Marconi scientists' deaths, 1982–1990

The one solved case was a murder by an unconnected local offender

Shani Warren, the case on the lists with the clearest signs of foul play, was murdered by Donald Robertson, a serial sex offender from Slough with no defence connection, convicted at Reading Crown Court on 17 May 2022 on DNA from the gag.

Established0

What it means

Key questionDid any of the deaths share a common cause, such as killings by an intelligence service?

3 answers, none ahead yet

Openunchanged

Answer this evidence bears onUnconnected: each death had its own cause

Supports2 for, none against

Still possibleunchanged

What it implies

The only death on the lists proved to be a killing had an ordinary criminal cause unrelated to defence work.For the key question: Did any of the deaths share a common cause, such as killings by an intelligence service?
Shani Warren's killer is known and had no link to Marconi or to intelligence.For: Who killed Shani Warren, found bound and gagged in Taplow Lake on 18 April 1987?

Next steps 2

Read FCO 65/3861 and FCO 7/8389 at Kew

Adds evidenceFair odds~6 h

On: Did any of the deaths share a common cause, such as killings by an intelligence service?

11score

Details

The open Foreign Office files on Wash (1986) and Moyle (1991) are the only official files on any of these deaths known to be readable. They would show what the government knew and said privately.

Request the Avon and Somerset police reports on Dajibhai and Sharif

Adds evidencePoor odds

On: Did any of the deaths share a common cause, such as killings by an intelligence service?

4score

Details

Freedom of Information request to Avon and Somerset Police and to the Avon coroner for the 1986-87 reports and inquest files. If released, they would show what evidence of third parties, if any, was found.

Ranked by how likely each is to move the key question, for the time it takes

Sources 2

Donald Robertson: Predatory sex offender found guilty in historic rape and murder case

Service 2022

SRC

Shani Warren: Donald Robertson guilty of murder

Observer 2022

SRC

Cite it

Mysteries Department. (2026). The one solved case was a murder by an unconnected local offender [Evidence EVD0DGGC2TQMAT1]. https://mysteriesdept.com/r/EVD0DGGC2TQMAT1

@misc{mysteriesdept_evd0dggc2tqmat1,
  title     = {The one solved case was a murder by an unconnected local offender},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Evidence, catalog key EVD0DGGC2TQMAT1},
  url       = {https://mysteriesdept.com/r/EVD0DGGC2TQMAT1}
}