The government's national security adviser Jonathan Powell made no decisions about the content of any evidence provided in the collapsed case against two men accused of spying for China, a minister has said.
Prosecutors unexpectedly dropped charges against Christopher Cash and Christopher Berry - who deny the allegations - in September.
Conservative leader Kemi Badenoch claimed the case collapsed because the government had refused to give the Crown Prosecution Service (CPS) "vital information" as it wanted to "curry favour" with China.
Security Minister Jarvis dismissed claims the government deliberately collapsed the case as "baseless".
Mr Powell, who is one of the prime minister's most senior advisers and political allies, is facing pressure over whether he played a role in the collapse of the trial, with the Conservatives saying he has "questions to answer".
