Funding for this research was provided by:
Health Technology Assessment Programme (15/130/84, HTA 15/154/07)
Received: 8 December 2020
Accepted: 3 July 2021
First Online: 17 July 2021
: Yorkshire and The Humber – Bradford Leeds Research Ethics Committee approved the ACTIVE study on 13th February 2018 (REC reference 18/YH/0014). North East – Newcastle and North Tyneside Research Ethics Committee approved the PRESTO study on 20th March 2018 (REC reference 18/NE/0008). Written and verbal consent was obtained from all participants before the start of each interview.
: Participants were made aware, verbally at the start of each interview and via the consent forms that anonymised quotations may be published.
: The authors declare that they have no competing interests.