Between 1999 and 2008 Gunson served as head coach and/or director of netball for Team Bath. She initially arrived at the University of Bath to study for a doctorate. During the Super Cup era, she guided Team Bath to the 2004 title. As director of netball she subsequently oversaw Team Bath as they won the inaugural Netball Super League title in 2005-2006 and then retain it in 2006 – 2007. During her time with Team Bath she helped mentor the next generation of English netball coaches, including Tamsin Greenway and Jess Thirlby. In 2015 Gunson was inducted into the University of Bath/Team Bath Hall of Fame for Sport. In 2019 Team Bath renamed the trophy awarded to the winners of their pre-season tournament after Gunson. Saracens Mavericks subsequently won the inaugural Lyn Gunson Trophy.