 She represented England at the 2010 Commonwealth Games, where she won silver medals in the 100-metre butterfly S9 and the 100-metre freestyle S9 and a bronze medal in the 50-metre freestyle S9, finishing behind winner Natalie du Toit of South Africa on each occasion.At the 2011 IPC European Championships in Berlin, Germany, Millward won three gold and two silver medals, including setting a world record time of four minutes, 52.40 seconds on the way to winning gold in the 4×100 m medley relay (34pts) alongside Heather Frederiksen, Claire Cashmore and Louise Watkin.Millward was named as part of a 44-swimmer squad to compete for Great Britain at the 2012 Summer Paralympics in London, United Kingdom.