King's College London

Funding Information: The authors would like to acknowledge the work and support of the team who conducted the recruitment: Rachel Woodcock, Hayley Tarft, Alice Lewin and Fenella Roseman. We would like to thank Tim James at the John Radcliffe Hospital for laboratory support. We would like to thank Marcus Green from Action on Pre-eclampsia for support with the PPI work. We would like to thank Lucy Curtin for admin support. This work would not have been possible without the support of many research midwives, supportive NHS staff and the women who participated at: Oxford University Hospitals NHS Foundation Trust, Guy’s and St Thomas’s NHS Foundation Trust, and Birmingham Women’s and Children’s NHS Foundation Trust. We thank all who were involved. Funding Information: This work was funded by a National Institute for Health Research (NIHR) programme grant for applied research (Optimising the monitoring and management of raised blood pressure during and after pregnancy, RP‐PG‐0614‐20 005) and an NIHR Professorship awarded to RM (NIHR‐RP‐R2‐12‐015). RM, KT and BJ received funding from the National Institute for Health Research (NIHR) Collaboration for Leadership in Applied Health Research (CLAHRC), now recommissioned as NIHR Applied Research Collaboration Oxford and Thames Valley (ARC‐OxTV). BJ also received funding from the Primary Care Research Trust. LH is based in The Healthcare Improvement Studies Institute (THIS Institute), University of Cambridge. THIS Institute is supported by the Health Foundation, an independent charity committed to bringing about better health and healthcare for people in the UK. LH received additional funding from the NIHR Oxford Biomedical Research Centre. LM is supported by the NIHR Oxford Biomedical Research Centre. The views expressed in this publication are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health and Social Care. Publisher Copyright: © 2022 The Authors. BJOG: An International Journal of Obstetrics and Gynaecology published by John Wiley & Sons Ltd.