1. South Tyneside and Sunderland NHS Foundation Trust South Tyneside District Hospital, South Shields Tyne and Wear UK
2. Newcastle University—Population Health Sciences Institute Newcastle University Centre for Cancer Newcastle Upon Tyne UK
3. Northumbria Healthcare NHS Foundation Trust North Tyneside General Hospital, North Shields UK
4. North Wales Organisation for Randomised Trials in Health (NWORTH) Bangor UK
5. Newcastle University—Health Economics Group, Population Health Sciences Institute Newcastle University Centre for Cancer Newcastle Upon Tyne UK
6. Patient and Participant Involvement Representative Newcastle University‐Population Health Sciences Institute, Newcastle University Centre for Cancer Newcastle Upon Tyne UK