Spacey made her debut for England against Belgium on 20 August 1984. She played in all four of England's games at their first FIFA Women's World Cup appearance in 1995. Having finished playing for England with a respectable 76 appearances, Spacey was later recalled by Hope Powell to add experience in midfield. Spacey was surprised by the development: "I honestly thought that wouldn't happen again. When I got the letter my legs went weak. I've played 76 times for England and now I feel like the new girl!" She went on to play a total of 91 times for her country, scoring 28 goals before retiring after UEFA Women's Euro 2001, aged 36.