The deputy national security adviser believed he had provided enough evidence to support the prosecution of two alleged Chinese spies, MPs and peers have heard.The case against Christopher Cash, a former parliamentary researcher, and Christopher Berry - who both deny wrongdoing - collapsed in September.The Crown Prosecution Service (CPS) said it did not have enough evidence to secure a conviction.

The deputy national security adviser believed he had provided enough evidence to support the prosecution of two alleged Chinese spies, MPs and peers have heard.The case against Christopher Cash, a former parliamentary researcher, and Christopher Berry - who both deny wrongdoing - collapsed in September.The Crown Prosecution Service (CPS) said it did not have enough evidence to secure a conviction.