A long-running libel case between hedge fund manager Bill Browder and Pavel Karpov has been thrown out.
Mr Karpov, a former Russian police officer, had claimed his reputation was damaged after Mr Browder alleged he was involved in the killing of prominent anti-corruption activist Sergei Magnitsky.
However, Mr Justice Simon, who ruled in the UK High Court on the case said Russia is a more apt location for the suit as Mr Karpov did not have any discernable reputation in Britain to defend.
"Taking all these matters into account ... I have concluded that these proceedings should be struck out as abuse of the process and/or under inherent jurisdiction," the judge commented.
The death of Mr Magnitsky sparked a high-profile spat between Russia, the US and the UK.
US officials placed sanctions on figures suspected to be involved in the activist's death and in response Russia banned Americans from adopting children from its sovereign custody.By Chris Stevenson