Norma Percy the MP John Mackintosh, who recommended her to the Granada Television producer Brian Lapping when he was looking for a researcher for a documentary on the workings of Parliament called "The State of the Nation". Percy produced the Granada series "End of Empire" (1985), which explored the effects of the end of the British Empire in various former colonies, and worked with Lapping on the 1987 drama-documentary "Breakthrough at Reykjavik", a reconstruction of the Reykjavík Summit between Ronald Reagan and Mikhail Gorbachev in 1986. After fifteen years at Granada, Percy joined the newly formed production company Brian Lapping Associates in
Ronald Reagan deal was achieved. Speaking at the Berlin Wall on June 12, 1987, Reagan challenged Gorbachev to go further, saying "General Secretary Gorbachev, if you seek peace, if you seek prosperity for the Soviet Union and Eastern Europe, if you seek liberalization, come here to this gate! Mr. Gorbachev, open this gate! Mr. Gorbachev, tear down this wall!" At Gorbachev's visit to Washington in 1987, he and Reagan signed the Intermediate-Range Nuclear Forces Treaty (INF Treaty) at the White House, which eliminated an entire class of nuclear weapons. The two leaders laid the framework for the Strategic Arms Reduction Treaty, or