What was the first number one single of record producing trio Stock Aitken Waterman?

"You Spin Me Round (Like a Record)" is a song by British band Dead or Alive on their 1985 album "Youthquake". Released as a single in 1984, it reached No. 1 in the UK in March 1985, taking 17 weeks to get there. It was the first UK No. 1 hit by the Stock Aitken Waterman production trio. On the U.S. Billboard Hot 100, it peaked at No. 11 on 17 August of that year.

Stock Aitken Waterman (abbreviated as SAW) are an English songwriting and record-producing trio consisting of Mike Stock, Matt Aitken, and Pete Waterman. The trio had great success from the mid-1980s through the early 1990s. SAW is considered one of the most successful songwriting and producing partnerships of all time, scoring more than 100 UK top 40 hits, selling 40 million records and earning an estimated £60 million (about $104 million).