Complex sentence: It was founded in Glasgow during the 1970s as What Every Woman Wants by Gerald and Vera Weisfeld, and became a national chain in 1990, after being sold by the Weisfelds for £50 million to "Brown & Jackson".
Split into simpler sentences: It was founded in Glasgow during the 1970s as What Every Woman Wants by Gerald and Vera Weisfeld. The firm became a national chain in 1990, after being sold by the Weisfelds for £50M to "Brown & Jackson".