There are serious health implications associated with pregnant women being overweight (BMI 25-29kg/m 2) (Lewis, 2007). Despite 'overweight/obesity' in pregnancy being highlighted in key government documents and research, the predominant focus is often on obesity (BMI ≥ 30kg/m 2). Women who are overweight (WO) tend to exceed the IOM weight gain guidelines (Phelan et al., 2011), compared to normal weight or obese women. Therefore, understanding the issues influencing dietary and physical activity choices for WO is crucial. Maternity staff can potentially influence behaviour change, so their experiences of providing support to WO, and the advice they provide to them was explored. 3 Candidate's Statement I declare that the work in this thesis was carried out in accordance with the regulations of the Sheffield Hallam University and is original except where indicated by the specific reference in the text. No part of the thesis has been submitted as part of any other academic award. The thesis has not been presented to any other education institution in the United Kingdom or overseas. Any views expressed in the thesis are those of the author and in no way represent those of the University.