Complex sentence: Willingham bought the Bombay Bicycle Club while in partnership with The Clapham House Group, Willingham was able to successfully expand the Bombay Bicycle Club from a chain of six restaurants to a seventeen chain business.
Split into simpler sentences: Willingham bought the Bombay Bicycle Club while in partnership with The Clapham House Group. She was able successfully to expand the Bombay Bicycle Club from a chain of six restaurants to a seventeen chain business.