You've got some of the detail wrong.

He spent years hopping from job to job in different organisations. Some of them were NHS orgs, but others were charities. When his deception was discovered he left the job.

From your link: "the prosecution did not accept his claim that he had performed excellently during his time at various NHS bodies, saying he was rated as “unsatisfactory” in some of his job"

His original trial court documents aren't available, but his appeals against the confiscation orders are available:

https://www.bailii.org/ew/cases/EWCA/Crim/2020/1055.html

https://www.bailii.org/uk/cases/UKSC/2022/24.html

And he did cause harm to those organisations.