Michelle Young says her ex-husband, Scot (right), was killed for his money and the inquiry into his death was swiftly closed down

Detectives who led the investigation into the attempted assassination of a former Russian spy in Salisbury have uncovered new evidence that links the Kremlin to at least two other suspected murders on British soil.

Officers from Scotland Yard’s counter-terrorism command (SO15), which investigated the poisoning of MI6 double agent Sergei Skripal and his daughter Yulia, have obtained new information that suggests others may have been targeted by Russian killers.

Russian agents suspected of more killings in the UK

One of the cases under consideration is understood to be that of Alexander Perepilichnyy, a businessman who died after blowing the whistle on a Kremlin fraud. The 44-year-old ate Russian sorrel soup before he vomited a “greeny-yellow” liquid and collapsed outside his Surrey mansion in 2012.

Scotland Yard is also understood to be re-examining the case