Defence of the Realm

The name of this movie is Defence of the Realm released in 1986-09-06 and it's main theme is A reporter Mullen 'stumbles' on a story linking a prominent Member of Parliament to a KGB agent. In fact it is also linked to a near Nuclear disaster involving a teenage runaway and an Americal USAF base. Has there been a Government cover-up,Mullen teams up with Vernon Bayliss, an old hack, and Nina Beckam the MP's assistant to find out the truth..