Who was British prime minister from 1990 to 1997?

Which master of spy fiction wrote the 1989 novel "The Russia House"? The top-selling album of 1989, "Don't Be Cruel," shared its title with an Elvis hit but was released by which singer? Which Kazuo Ishiguro novel about an English butler reflecting on his long career won the 1989 Booker Prize? Which name completes the title of the 1990 Tom Hanks and Meg Ryan film "___ Versus the Volcano"? John Paxson, Horace Grant and Scottie Pippen helped which team win the 1991 NBA title, along with a certain star not me… In which 1990 film does Arnold Schwarzenegger play undercover detective John Kimble, forced to teach little kids? Which author's 1990 bestseller "Four Past Midnight" collected four novellas? In 1990, festivities for the 20th anniversary of which annual observance included a trash cleanup trek on Mount Everest?