Musical 'Mamma Mia!' celebrates 25 years in the West End

Back in 1999, the all-female team behind musical "Mamma Mia!", based on songs by Swedish pop group ABBA, had no idea how successful their 'kitchen sink' show would be. "When you're a producer, you just hope everything will work. So to be here 25 years (on) is a big milestone," producer and creator Judy Craymer said.