Baroness Wheatcroft, a former Conservative peer, is among those who have filed legal proceedings against ministers accusing them of failing to protect the right to âfree and fairâ elections.
The politicians say they have no choice but to act after ministers ignored the recommendations of parliamentâs Intelligence & Security Committee, which earlier this year found the government and the intelligence agencies had failed to conduct any proper assessment of Russian attempts to interfere in the 2016 Brexit referendum. Â
Support for their case comes from Lord Peter Ricketts, the former UK national security adviser.
He said a âfull retrospectiveâ investigation is needed after ministers failed to âgive political directionâ to the intelligence services.
In documents submitted to the court the group claim that future elections are now at risk.
The politicians, Labour MPs Ben Bradshaw and Chris Bryant, Green MP Caroline Lucas, SNP MP Alyn Smith and Lib Dem peer Lord Strasburger as well as Baroness Wheatcroft, say they believe it is the first time lawmakers have taken legal action against the government over alleged national security failures.
In a witness statement Lord Ricketts expresses his surprise that âthe government appeared not to have sought evidence on whether the Russian state was successful in interfering in the 2016 EU referendum campaign, and neither had it made any post-referendum assessment of Russian attempts to influence elections in the UK.â
He adds: âGiven the importance of knowing the extent of past Russian interference in assessing the risk for future elections, I do not understand why the government would choose not to investigate.â
Lord Strasburger said it was âvery significantâ that Lord Ricketts was publicly supporting the case.
âHe was about as senior as it gets in the intelligence community and if he is worried about the governmentâs refusal to investigate, we all should be," he said.
Baroness Wheatcroft condemned what she said was the governmentâs failure act as âshameful".
A UK government spokesperson said: "We don't comment on ongoing legal proceedings.
"Safeguarding our democracy will always be an absolute priority and the UK has robust systems in place to protect our elections and institutions from interference.
âTo prevent against any future threats we are bringing forward new legislation to provide the security services and law enforcement agencies with the tools they need to disrupt hostile state activity.
"And we have also published proposals for a digital imprint regime that will improve transparency in political campaigning online, and are developing an online media literacy strategy to help empower the public to question the information they read online."