The death of tycoon Scot Young could be re-examined by detectives investigating the poisoning of Sergei Skripal, it has been claimed amid calls to probe a string of suspicious deaths linked to Russia.

Police investigating the novichok attack are said to have uncovered information which shows when Russian military intelligence officers travelled to the UK and linked it to the death of Mr Young and that of whilstleblower Alexander Perepilichnyy.

Officers have previously said that there is no evidence that the deaths were suspicious, despite insistences from family and friends that they were murdered.

They are among a group of at least 14 men who deaths have been publicly linked to the Russian state, though investigations have concluding that they all died either from suicide or natural causes.

There are now calls for officers to look again at all 14 cases in light of the new information regarding the movements of GRU officers on British soil.

A number of agents are understood to have been identified after leaked passport data and other personal information emerged in the wake of the poisoning of Mr Skripal, a former Russian spy, and his daughter Yulia.