Nice investigative work, to be honest I was just giving him the benefit of the doubt by calling him an intellectually dishonest charlatan.
I suspect it is not just Michael Sharpe and Peter White who have disability insurance links, but also Simon Wessely, but he may be better at covering his tracks.
Wessely was involved in PRISMA, a multi-national healthcare company working with insurance companies.
Simon Wessely is featured on this Swiss Re insurance website page.