Accepted: 20 September 2021
First Online: 2 November 2021
: No funding was received for conducting this work. In accordance with institutional policy as it applied at the relevant time, approvals were obtained as follows: Case Study 2 (Section InternalRef removed) was approved by the UCL Research Ethics Committee (6082/002) and the survey reported in Section InternalRef removed was approved by the Head of Department of Computer Science, UCL. All other research presented in this work did not require approval, but was performed following advice from the appropriate sources at UCL at the relevant time.
: See Section InternalRef removed for detailed discussion of the ethics considerations for the work presented in the paper.